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  1. #include <stdio.h>
  2. int main(void){
  3.  
  4.     int x[2][2]={{1, 2},{3, 4}};
  5.  
  6.     int y[2][2]={{1, 2},{3, 4}};
  7.  
  8.     int ans[2][2];
  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.  
  17.     for(int i=0; i<2; i++){
  18.     for(int j=0; j<2; j++){
  19.     ans[i][j] = 0;
  20.     for(int a=0; a<2; a++){
  21.     ans[i][j] += x[i][a]*y[a][j];
  22.     }
  23.     }
  24.     }
  25.  
  26.     printf("Result:\n");
  27.     for(int i = 0; i < 2; i++){
  28.         for(int j = 0; j < 2; j++){
  29.             printf("%d ", ans[i][j]);
  30.         }
  31.         printf("\n");
  32.     }
  33. }
Success #stdin #stdout 0s 5316KB
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stdin
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Standard input is empty
stdout
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Result:
7 10 
15 22
https://ideone.com/pA0IlI
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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