fork download 
  1. #include <stdio.h>
  2. void array_mul(int(*x)[2],int(*y)[2],int(*ans)[2]);
  3. int main(void){
  4.     int x[2][2]={{1,2},{3,4}};
  5.     int y[2][2]={{1,2},{3,4}};
  6.     int ans[2][2]={0};
  7.     array_mul(x,y,ans);
  8.     for (int i=0;i<2;i++){
  9.         for(int j=0;j<2;j++){
  10.             printf("%d ",ans[i][j]);
  11.         }
  12.         putchar('\n');
  13.     }
  14.     return 0;
  15. }
  16. void array_mul(int(*x)[2],int(*y)[2],int(*ans)[2]){
  17.     for(int i=0;i<2;i++){
  18.         for(int j=0;j<2;j++){
  19.             ans[i][j]=0;
  20.             for(int k=0;k<2;k++){
  21.                 ans[i][j]+=x[i][k]*y[k][j];
  22.             }
  23.         }
  24.     }
  25. }
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin 
Standard input is empty
stdout 
7 10 
15 22
https://ideone.com/UOY66Z
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!