回答編集履歴
1
追記
answer
CHANGED
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@@ -1,2 +1,34 @@
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1
1
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× scanf("%lf", A[i*3+j]);
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2
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-
○ scanf("%lf", &A[i][j]);
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2
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○ scanf("%lf", &A[i][j]);
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3
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4
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[追記] それともやりたかったのはコレ↓か?
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5
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```C
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6
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#include <stdio.h>
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7
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#include <stdlib.h>
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8
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9
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int main(void) {
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10
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11
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int i, j;
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12
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i = 3; j = 3; k = 3;
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13
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double* A = (double*)malloc(i*k*sizeof(double));
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14
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for (i = 0; i < 3; i++) {
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15
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for (j = 0; j < 3; j++) {
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16
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printf("A[%d][%d]=", i, j);
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17
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scanf("%lf", &A[i*k+j]);
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18
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}
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19
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}
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20
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21
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double determinant;
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22
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23
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determinant = A[0*k+0] * A[1*k+1] * A[2*k+2]
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24
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+ A[0*k+1] * A[1*k+2] * A[2*k+0]
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25
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+ A[0*k+2] * A[1*k+0] * A[2*k+1]
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26
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- A[0*k+0] * A[1*k+2] * A[2*k+1]
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27
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- A[0*k+1] * A[1*k+0] * A[2*k+2]
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28
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- A[0*k+2] * A[1*k+1] * A[2*k+0];
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29
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30
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printf("determinant:%f\n", determinant);
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31
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free(A);
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32
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return 0;
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33
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}
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34
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```
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