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  1. #include <stdio.h>
  2. void array_mul(int(*x)[2],int(*y)[2],int(*ans)[2]);
  3.  
  4. int main(void) {
  5. 	int x[2][2]={{1,2},{3,4}};
  6. 	int y[2][2]={{1,2},{3,4}};
  7. 	int ans[2][2]={0};
  8. 	array_mul(x,y,ans);
  9.  
  10.     return 0;
  11. }
  12.  
  13.  
  14. void array_mul(int (*x)[2], int (*y)[2], int (*ans)[2]) {
  15. 	int i, j, k;
  16.     for(i = 0; i < 2; i++){
  17.         for(j = 0; j < 2; j++){
  18.             for(k = 0; k < 2; k++){
  19.                 ans[i][j] += x[i][k] * y[k][j];
  20.             }
  21.         }
  22.     }
  23.     for(i = 0; i < 2; i++){
  24.         for(j = 0; j < 2; j++){
  25.             printf("%d ", ans[i][j]);
  26.         }
  27.         printf("\n");
  28.     }
  29. }
  30.  
Success #stdin #stdout 0s 5320KB
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https://ideone.com/rHiHbx
language:
C99 (gcc 8.3)
created:
2 days ago
visibility:
public

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