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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. //必要があれば変数などを追加してもOKです
  5.  
  6. int main(){
  7.     int i,j,k;
  8.     int a,b;
  9.     int **mat;
  10.     scanf("%d %d",&a,&b);
  11.  
  12.  mat = malloc(a*sizeof(int*));
  13.     for(i=0;i<a;i++){
  14.         mat[i]=malloc(b*sizeof(int));
  15.     }
  16.  
  17.     for(i=0;i<a;i++){
  18.         for(j=0;j<b;j++){
  19.             printf("%d ",mat[i][j]);
  20.         }
  21.         printf("\n");
  22.     }
  23.  
  24. free(mat);
  25.  
  26.  
  27.     return 0;
  28. }
  29.  
Success #stdin #stdout 0.01s 5304KB
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stdout
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https://ideone.com/E3H69h
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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