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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=(int**)malloc(sizeof(int*)*a);
  13.  
  14. 	for(i=0;i<b;i++){
  15. 		mat[i]=(int*)malloc(sizeof(int)*b);
  16. 		if(mat[i]==NULL){
  17. 			printf("Error\n");
  18. 			return 0;
  19. 		}
  20. 	}
  21. 	for(i=0;i<a;i++){
  22. 		for(j=0;j<b;j++){
  23. 			mat[i][j]=k++;
  24. 		}
  25. 	}
  26.     for(i=0;i<a;i++){
  27.         for(j=0;j<b;j++){
  28.             printf("%d ",mat[i][j]);
  29.         }
  30.         printf("\n");
  31.     }
  32.  
  33. free(mat); 
  34.  
  35.     return 0;
  36. }
Success #stdin #stdout 0s 5284KB
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https://ideone.com/Umi6qq
language:
C (gcc 8.3)
created:
297 days ago
visibility:
public

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