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  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.     printf("計算結果(ans):\n");
  9.     for (int i=0;i<2;i++){
  10.         for(int j=0;j<2;j++){
  11.             printf("%d ",ans[i][j]);
  12.         }
  13.         putchar('\n');
  14.     }
  15.     return 0;
  16. }
  17. void array_mul(int(*x)[2],int(*y)[2],int(*ans)[2]){
  18.     for(int i=0;i<2;i++){
  19.         for(int j=0;j<2;j++){
  20.             ans[i][j]=0;
  21.             for(int k=0;k<2;k++){
  22.                 ans[i][j]+=x[i][k]*y[k][j];
  23.             }
  24.         }
  25.     }
  26. }
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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計算結果(ans):
7 10 
15 22
https://ideone.com/lXeqIm
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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