回答編集履歴
1
strtol を使うコードを追加
test
CHANGED
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@@ -5,3 +5,95 @@
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fscanf の書式を "%d," に変更するだけではダメでしょう。
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**追記**
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fgets と strtol を使った例です。他にもやり方はあります。
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```C
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#include <stdio.h> // fopen, fclose, fgets, puts, printf, putchar
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#include <stdlib.h> // strtol
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#define BUF_SIZE 256
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#define LINE_SIZE 20
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#define FIELD_SIZE 16
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int main(void)
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{
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FILE *fp = fopen("Book1.csv", "r");
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if (fp == NULL) return 1;
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char buf[BUF_SIZE];
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int line;
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for (line = 0; fgets(buf, BUF_SIZE, fp); line++) ;
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if (line > LINE_SIZE) { puts("too many lines"); return 2; }
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rewind(fp);
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int data[LINE_SIZE][FIELD_SIZE], count[LINE_SIZE];
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for (int i = 0; fgets(buf, BUF_SIZE, fp); i++) {
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char *p = buf, *sep;
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int j = 0;
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while (j < FIELD_SIZE) {
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data[i][j] = strtol(p, &sep, 10);
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if (sep == p) break;
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if (++j >= FIELD_SIZE) { puts("too many fields"); return 3; }
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if (*sep != ',') break;
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p = sep + 1;
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}
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count[i] = j;
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}
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fclose(fp);
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for (int i = 0; i < line; i++) {
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for (int j = 0; j < count[i]; j++)
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printf("%10d", data[i][j]);
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putchar('\n');
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}
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return 0;
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}
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```
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