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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. typedef enum {
  5. 	INT, FLOAT, DOUBLE
  6. } Type;
  7.  
  8. void initMat(Type type, int matSize, void **matA, void **matB, void **matC){
  9. 	switch(type) {
  10. 	case INT :
  11. 		*matA = malloc(matSize * sizeof(int*));
  12. 		*matB = malloc(matSize * sizeof(int*));
  13. 		*matC = malloc(matSize * sizeof(int*));
  14. 		int **matA_i = *matA;
  15. 		int **matB_i = *matB;
  16. 		int **matC_i = *matC;
  17.  
  18. 		for (int i = 0; i < matSize; i++) {
  19. 			matA_i[i] = malloc(matSize * sizeof(int));
  20. 			matB_i[i] = malloc(matSize * sizeof(int));
  21. 			matC_i[i] = malloc(matSize * sizeof(int));
  22. 			for (int j = 0; j < matSize; j++) {
  23. 				matA_i[i][j] = rand() % 11;
  24. 				matB_i[i][j] = rand() % 11;
  25. 				matC_i[i][j] = 0;
  26. 			}
  27. 		}
  28. 		break;
  29.  
  30. 	case FLOAT :
  31. 	case DOUBLE :
  32. 		//not yet
  33. 		*matA = NULL; *matB = NULL; *matC = NULL;
  34. 		break;
  35.  
  36. 	default :
  37. 		printf("Invalid case.\n" );
  38. 	}
  39. }
  40.  
  41. void displayMat(Type type, int matSize, void *matA){
  42. 	switch(type){
  43. 	case INT:
  44. 	{
  45. 		int **mat = matA;
  46. 		for(int i = 0; i < matSize; ++i){
  47. 			for(int j = 0; j < matSize; ++j){
  48. 				if(j)
  49. 					putchar(' ');
  50. 				printf("%d", mat[i][j]);
  51. 			}
  52. 			putchar('\n');
  53. 		}
  54. 	}
  55. 		break;
  56. 	default:
  57. 		printf("not yet\n");
  58. 	}
  59. }
  60.  
  61. int main(void){
  62. 	Type type = INT;
  63. 	int size = 0;
  64. 	void *matA, *matB, *matC;
  65.  
  66. 	int sizes[6] = {3, 4, 5};
  67. 	int matSize = sizes[size];
  68. 	printf("The selected matrix size is: %d.\n", matSize);
  69.  
  70. 	initMat(type, matSize, &matA, &matB, &matC);
  71.  
  72. 	displayMat(type, matSize, matA);
  73. 	//deallocate mat
  74.  
  75. }
Success #stdin #stdout 0s 9432KB
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Standard input is empty
stdout
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The selected matrix size is: 3.
6 6 1
0 3 8
5 7 9
https://ideone.com/igYfQQ
language:
C99 (gcc 8.3)
created:
8 years ago
visibility:
public

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