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  1. #include <stdio.h>  #include <stdlib.h> //行が足りないので改行を省略
  2. int main(){
  3.     int i,j,k=1;  int a,b;  //改行を省略
  4.     int **mat;
  5.     scanf("%d %d",&a,&b); 
  6. 	mat = (int**)malloc(sizeof(int*)*a);
  7.  	if(mat == NULL){ printf("ERROR\n"); return 0;  }//改行の省略
  8. 	for (i = 0; i < a; i++) {
  9. 		mat[i] = (int*)malloc(sizeof(int)*b);
  10.  		if(mat[i] == NULL){ printf("ERROR\n");  return 0;  } //改行の省略
  11. 	}
  12. 	for (i = 0; i < a; i++) {
  13. 		for (j = 0; j < b; j++) {
  14. 			mat[i][j] = k++;
  15. 		}
  16. 	}
  17. 	for(i=0;i<a;i++){
  18.         for(j=0;j<b;j++){
  19.             printf("%d ",mat[i][j]);
  20.         }
  21.         printf("\n");
  22.     }
  23. 	for(i=0;i<a;i++){
  24. 		free(mat[i]);
  25. 	}
  26. 	free(mat);
  27.     return 0;
  28. }
  29.  
Success #stdin #stdout 0s 5304KB
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https://ideone.com/KGQijg
language:
C (gcc 8.3)
created:
15 days ago
visibility:
public

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