質問編集履歴
1
解決verを更新しました。
test
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File without changes
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test
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@@ -322,6 +322,256 @@
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#include <stdio.h>
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328
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329
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#include <stdlib.h>
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330
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331
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#include <ctype.h>
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332
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333
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334
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335
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typedef long ELEMENT;
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336
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337
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338
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339
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#define STACK_SIZE 100
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340
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341
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342
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343
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ELEMENT stack[STACK_SIZE];
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344
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345
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int n;
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346
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+
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347
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+
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348
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+
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349
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/*push関数**/
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350
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351
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void push(ELEMENT x)
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352
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353
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{
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354
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355
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if (n>=STACK_SIZE){
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356
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357
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printf("stack overflow");
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358
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359
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exit(1);
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360
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361
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}
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362
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363
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stack[n++]=x;
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364
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365
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}
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366
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367
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368
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369
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/*pop関数*/
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370
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371
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ELEMENT pop()
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372
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373
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{
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375
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if (n<=0){
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376
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377
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printf("stack underflow");
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378
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379
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exit(1);
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380
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381
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}
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382
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383
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return stack[--n];
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384
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385
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}
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386
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387
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388
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389
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int is_digit(char *formula)
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390
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391
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{
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392
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393
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if (*formula=='+' || *formula=='-'){
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394
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395
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formula++;
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396
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397
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if (*formula>='0' && *formula<='9'){
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398
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399
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return 1;
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400
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401
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}
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402
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403
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return 0;
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404
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405
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}
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406
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407
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if (*formula>='0' && *formula<='9'){
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408
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409
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return 1;
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410
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411
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}
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412
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413
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return 0;
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414
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415
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}
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416
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417
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418
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419
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420
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解決ver↓
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422
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423
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424
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425
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int main(void)
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426
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427
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{
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428
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429
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n=0; /*スタックの初期化*/
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430
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431
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432
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433
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int s;
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434
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435
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printf("数字データの時はスタックに積み、ピリオドの時はスタックから降ろします。(EOFで終了)\n");
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436
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437
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printf("データ入力の方法を選んでください。\n0..キーボード/1..ファイル：");
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438
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439
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scanf("%d",&s);putchar('\n');
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440
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+
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441
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long x,a,b;
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442
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443
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FILE *fp=stdin;
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444
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+
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445
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446
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447
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if (s==1){
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448
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449
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fp=fopen("data.txt","r");
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450
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451
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if (fp==NULL){
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452
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453
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printf("ファイルオープン失敗\n");
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454
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+
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455
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return 1;
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456
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+
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457
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}
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458
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+
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459
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}
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460
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+
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461
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462
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+
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463
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char str[32]={0};
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464
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+
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465
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+
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466
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+
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467
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+
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468
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+
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469
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if (s==0)
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470
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471
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printf("input:");
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472
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473
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+
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474
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+
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475
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while((fscanf(fp,"%s",str)!=EOF)){
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476
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+
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477
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+
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478
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+
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479
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if (is_digit(str)){
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480
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481
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x=atoi(str);
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482
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483
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push(x);
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484
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+
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485
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+
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486
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+
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487
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}else{
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488
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+
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489
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+
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490
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+
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491
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switch (str[0]){
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492
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+
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493
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case '.':
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494
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+
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495
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pop();
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496
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+
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497
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break;
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498
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499
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case '+':
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500
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501
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b=pop();a=pop();
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502
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+
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503
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push(a+b);
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504
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+
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505
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break;
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506
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+
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507
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case '-':
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508
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+
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509
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b=pop();a=pop();
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510
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+
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511
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push(a-b);
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512
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+
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513
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+
break;
|
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514
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+
|
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515
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+
case '*':
|
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516
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+
|
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517
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+
b=pop();a=pop();
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518
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+
|
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519
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push(a*b);
|
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520
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+
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521
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+
break;
|
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522
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+
|
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523
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+
case '/':
|
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524
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+
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525
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b=pop();a=pop();
|
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526
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+
|
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527
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+
push(a/b);
|
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528
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+
|
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529
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+
break;
|
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530
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+
|
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531
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+
case ' ':
|
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532
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+
|
|
533
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+
break;
|
|
534
|
+
|
|
535
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+
case 'A': /*Aで答えを表示*/
|
|
536
|
+
|
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537
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+
if(n!=0)
|
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538
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+
|
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539
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+
printf("答えは%ldです。",pop());
|
|
540
|
+
|
|
541
|
+
n=0;
|
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542
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+
|
|
543
|
+
break;
|
|
544
|
+
|
|
545
|
+
|
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546
|
+
|
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547
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+
default:
|
|
548
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+
|
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549
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+
printf("不正な入力です。\n");
|
|
550
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+
|
|
551
|
+
while ((fscanf(fp,"%s",str)!=EOF))
|
|
552
|
+
|
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553
|
+
;
|
|
554
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+
|
|
555
|
+
break;
|
|
556
|
+
|
|
557
|
+
}
|
|
558
|
+
|
|
559
|
+
}
|
|
560
|
+
|
|
561
|
+
}
|
|
562
|
+
|
|
563
|
+
fclose(fp);
|
|
564
|
+
|
|
565
|
+
return 0;
|
|
566
|
+
|
|
567
|
+
}
|
|
568
|
+
|
|
569
|
+
|
|
570
|
+
|
|
571
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+
|
|
572
|
+
|
|
573
|
+
|
|
574
|
+
|
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325
575
|
```
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326
576
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327
577
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