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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main() {
  5.     int a, b;
  6.     scanf("%d %d", &a, &b);
  7.  
  8. 	int **matrix = malloc(sizeof(int *) * a);
  9. 	if (matrix == NULL) {
  10. 		printf("allocation failed");
  11. 		return 1;
  12. 	}
  13. 	for (int i = 0; i < a; i++) {
  14. 		int *row = malloc(sizeof(int) * b);
  15. 		if (row == NULL) {
  16. 			printf("allocation failed");
  17. 			return 1;
  18. 		}
  19. 		matrix[i] = row;
  20. 	}
  21.  
  22. 	int counter = 0;
  23.     for(int i = 0; i < a; i++) {
  24.         for(int j = 0; j < b; j++) {
  25. 			matrix[i][j] = ++counter;
  26.         }
  27.     }
  28.  
  29.     for(int i = 0; i < a; i++) {
  30.         for(int j = 0; j < b; j++) {
  31.             printf("%d ", matrix[i][j]);
  32.         }
  33.         printf("\n");
  34.     }
  35.  
  36. 	for (int i = 0; i < a; i++) free(matrix[i]);
  37. 	free(matrix);
  38.  
  39.     return 0;
  40. }
  41.  
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/KhvZYz
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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