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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main(){
  5.     int i,j,k;
  6.     int a,b;
  7.     int **mat;
  8.     scanf("%d %d",&a,&b);
  9.  
  10. mat=(int **)malloc(sizeof(int)*a*b);
  11.    if(mat==NULL){
  12.    	printf("エラー");
  13.    	return 0;
  14.    }
  15.  
  16. for(i=0; i<a; i++){
  17. 	mat[i]=(int *)malloc(sizeof(int)*b);
  18. 	if(mat[i]==NULL){
  19. 		printf("エラー");
  20. 		return 0;
  21. 	}
  22. }
  23.  k = 1;
  24.     for(i=0;i<a;i++){
  25.         for(j=0;j<b;j++){
  26.             mat[i][j] = k++;
  27.         }
  28.     }	
  29.  
  30.  
  31.     for(i=0;i<a;i++){
  32.         for(j=0;j<b;j++){
  33.             printf("%d ",mat[i][j]);
  34.         }
  35.         printf("\n");
  36.     }
  37.    for(i=0;i<a;i++){
  38.         free(mat[i]);
  39.     }
  40.     free(mat); 
  41.  
  42.  
  43.  
  44.     return 0;
  45. }
  46.  
Success #stdin #stdout 0s 5304KB
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https://ideone.com/61zugT
language:
C (gcc 8.3)
created:
17 days ago
visibility:
public

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