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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #define IsNull(expr) ((expr) == NULL)
  4.  
  5. #define CALLOC(var, size,type) ; \
  6. 	if (IsNull((var) = ((type *)calloc((size),sizeof(type))))) { \
  7. 		perror(0); return EXIT_FAILURE; \
  8. 	};
  9.  
  10. inline void printArr(int *A, int f, int e) {
  11. 	int i;
  12. 	for (i = f; i < e; i++) {
  13. 		printf("A[%d] = %d\n", i, A[i]);
  14. 	}
  15. }
  16.  
  17. int main(void) {
  18. 	// your code goes here
  19. 	int *a, *b, *p;
  20. 	int i;
  21.  
  22. 	CALLOC(a,10,int);
  23. 	CALLOC(b,10,int);
  24.  
  25. 	for (i = 0; i < 6; i++) {
  26. 		a[i] = (i + 1) * (i + 1);
  27. 	}
  28.  
  29. 	printf("a:0x%x\n", a);
  30. 	printf("b:0x%x\n", b);
  31.  
  32. 	printArr(a, 0, 8);
  33.  
  34. 	p = (int *)realloc(a, 200);
  35.  
  36. 	if (IsNull(p)) {
  37. 		perror(0);
  38. 		return EXIT_FAILURE;
  39. 	} else {
  40. 		a = p;
  41. 	}
  42.  
  43. 	printf("a:0x%x\n", a);
  44. 	printArr(a, 0, 8);
  45.  
  46. 	free(a);
  47. 	free(b);
  48.  
  49. 	return EXIT_SUCCESS;
  50. }
  51.  
Success #stdin #stdout 0s 2424KB
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stdin
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Standard input is empty
stdout
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a:0x82e4008
b:0x82e4038
A[0] = 1
A[1] = 4
A[2] = 9
A[3] = 16
A[4] = 25
A[5] = 36
A[6] = 0
A[7] = 0
a:0x82e4068
A[0] = 1
A[1] = 4
A[2] = 9
A[3] = 16
A[4] = 25
A[5] = 36
A[6] = 0
A[7] = 0
https://ideone.com/Hkgdng
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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