73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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void mul(int **a, int **b, int **c, int n) {
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int i, j, k, sum;
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for (i = 0; i < n; i++) {
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for (j = 0; j < n; j++) {
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sum = 0;
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for (k = 0; k < n; k++) {
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sum += a[i][k] * b[k][j];
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}
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c[i][j] = sum;
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}
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}
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}
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int main() {
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int i, j, n = 2;
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int ary_a[2][2]={{1,2},{3,4}};
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int ary_b[2][2]={{5,6},{7,8}};
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// <20>ʺA<CABA><41><EFBFBD>t<EFBFBD>O<EFBFBD><4F><EFBFBD>鵹<EFBFBD>x<EFBFBD>}
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int **arr_a = (int **)malloc(n * sizeof(int *));
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int **arr_b = (int **)malloc(n * sizeof(int *));
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int **arr_c = (int **)malloc(n * sizeof(int *));
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if (arr_a == NULL || arr_b == NULL || arr_c == NULL) {
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printf("<EFBFBD>O<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>t<EFBFBD><EFBFBD><EFBFBD><EFBFBD>\n");
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return 1;
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}
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for (i = 0; i < n; i++) {
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arr_a[i] = (int *)malloc(n * sizeof(int));
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arr_b[i] = (int *)malloc(n * sizeof(int));
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arr_c[i] = (int *)malloc(n * sizeof(int));
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if (arr_a[i] == NULL || arr_b[i] == NULL || arr_c[i] == NULL) {
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printf("<EFBFBD>O<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>t<EFBFBD><EFBFBD><EFBFBD><EFBFBD>\n");
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return 1;
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}
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}
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for (i = 0; i < 2; i++) {
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for (j = 0; j < 2; j++) {
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arr_a[i][j] = ary_a[i][j];
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arr_b[i][j] = ary_b[i][j];
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}
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}
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// <20>i<EFBFBD><69><EFBFBD>x<EFBFBD>}<7D><><EFBFBD>k
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mul(arr_a, arr_b, arr_c, n);
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// <20><><EFBFBD>X<EFBFBD><58><EFBFBD>G
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for (i = 0; i < n; i++) {
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for (j = 0; j < n; j++) {
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printf("arr_c[%d][%d] = %d\n", i, j, arr_c[i][j]);
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}
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}
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// <20><><EFBFBD><EFBFBD><EFBFBD>O<EFBFBD><4F><EFBFBD><EFBFBD>
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for (i = 0; i < n; i++) {
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free(arr_a[i]);
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free(arr_b[i]);
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free(arr_c[i]);
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}
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free(arr_a);
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free(arr_b);
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free(arr_c);
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return 0;
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}
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