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  1. #include <stdio.h>
  2.  
  3. void array_mul( int (*x)[2], int (*y)[2], int (*ans)[2] );
  4.  
  5. int main(void) {
  6. 	int x[2][2]={{1,2},{3,4}};
  7. 	int  y[2][2]={{1,2},{3,4}};
  8. 	int ans[2][2]={0};
  9.  
  10. 	array_mul(x,y,ans);
  11.     for(int i = 0; i < 2; i++){
  12.         for(int j = 0; j < 2; j++){
  13.             printf("%d ", ans[i][j]);
  14.         }}
  15. 	return 0;
  16. }
  17.  void array_mul( int (*x)[2], int (*y)[2], int (*ans)[2] ){
  18.  int i,j,k;
  19.  for(i = 0; i < 2; i++){
  20.     for(j = 0; j < 2; j++){
  21.         ans[i][j] = 0;
  22.         for(k = 0; k < 2; k++){
  23.             ans[i][j] += x[i][k] * y[k][j];
  24.         }
  25.     }
  26. }}
  27.  
  28.  
Success #stdin #stdout 0s 5304KB
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7 10 15 22
https://ideone.com/6tGaSW
language:
C99 (gcc 8.3)
created:
2 days ago
visibility:
public

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