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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[3][2] = {{1,2}, {3,4}};
  8. 	int ans[2][2] = { 0 } ;
  9.  
  10. 	array_mul(x, y, ans);
  11.  
  12. 	return 0;
  13. }
  14.  
  15. void array_mul( int (*x)[2], int (*y)[2], int (*ans)[2] ){
  16.     for (int i = 0; i < 2; i++) {
  17.         for (int j = 0; j < 2; j++) {
  18.             for (int k = 0; k < 3; k++) {
  19.                 ans[i][j] += x[i][k] * y[k][j];
  20.             }
  21.         }
  22.     }
  23.  
  24.     for (int i = 0; i < 2; i++) {
  25.         for (int j = 0; j < 2; j++) {
  26.             printf("%d ", ans[i][j]);
  27.         }
  28.     putchar('\n');
  29.     }
  30. }
Success #stdin #stdout 0s 5312KB
comments (?)
stdin 
Standard input is empty
stdout 
7 10 
15 22
https://ideone.com/73DJ7e
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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