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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. 	if(mat==NULL){
  14. 		printf("error");
  15. 		return 0;
  16. 	}
  17. 	for(i=0;i<a;i++){
  18. 		mat[i]=(int*)malloc(sizeof(int*)*b);
  19. 		if(mat[i]==NULL){
  20. 			printf("error");
  21. 			return 0;
  22. 		}
  23. 	}
  24. 	for(i=0;i<a;i++){
  25. 		for(j=0;j<b;j++){
  26. 			mat[i][j]=k++;
  27. 		}
  28. 	}
  29.  
  30.  
  31.  
  32.     //以下の部分は表示の部分です
  33.     //いじらなくてOK
  34.     for(i=0;i<a;i++){
  35.         for(j=0;j<b;j++){
  36.             printf("%d ",mat[i][j]);
  37.         }
  38.         printf("\n");
  39.     }
  40.  
  41.     free(mat);
  42.  
  43.  
  44.     return 0;
  45. }
Success #stdin #stdout 0s 5288KB
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https://ideone.com/LkHOgw
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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