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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=1;
  8.     int a,b;
  9.     int **mat;
  10.     scanf("%d %d",&a,&b);
  11.  
  12. 	 mat = (int**)malloc(a*sizeof(int*));
  13. 	if(mat == NULL){ printf("error\n");
  14.  return 0;
  15. }
  16.     for(i = 0; i < a; i++) {
  17.         mat[i] = (int*)malloc(b*sizeof(int));
  18. 			if(mat[i] == NULL){ printf("error\n");
  19.  return 0;
  20. }}
  21.  
  22.  
  23.     for(i = 0; i < a; i++){
  24.         for(j = 0; j < b; j++){
  25.             mat[i][j] = k++;
  26.  }
  27.  }
  28.  
  29.  
  30.     for(i=0;i<a;i++){
  31.         for(j=0;j<b;j++){
  32.             printf("%d ",mat[i][j]);
  33.         }
  34.         printf("\n");
  35.     }
  36.  
  37.     for(i=0;i<a;i++) {
  38.         free(mat[i]);
  39.     }
  40.     free(mat);
  41.  
  42.  
  43.     return 0;
  44. }
  45.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin 
2 3
stdout 
1 2 3 
4 5 6
https://ideone.com/9M4tIX
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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