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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=5;
  8.     int a,b;
  9.     int **mat;
  10.     scanf("%d %d",&a,&b);
  11. 	//ここで2次元配列の動的確保をする
  12. 	mat=(int**)malloc(sizeof(int*)*a);
  13. 	if(mat==NULL){
  14. 		printf("ERROR\n");
  15. 	}
  16. 	for(i=0;i<a;i++){
  17. 		mat[i]=(int*)malloc(sizeof(int)*b);
  18. 	}
  19. 	if(mat==NULL){
  20. 		printf("ERROR\n");
  21. 	}
  22. 	for(i=0;i<a;i++){
  23. 		for(j=0;j<b;j++){
  24. 			mat[i][j]=k;
  25. 			k++;
  26. 		}
  27. 	}
  28. 	for(i=0;i<a;i++){
  29. 		for(j=0;j<b;j++){
  30. 			printf("%d ",mat[i][j]);
  31. 		}
  32. 		printf("\n");
  33. 	}
  34.  
  35. 	for(i=0;i<a;i++){
  36. 		free(mat[i]);
  37. 	}
  38. 	free(mat);
  39. 	return 0;
  40. }
Success #stdin #stdout 0s 5288KB
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https://ideone.com/T0YR35
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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