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  1. #define _CRT_SECURE_NO_WARNINGS
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4. #include <string.h>
  5. #include <errno.h>
  6. #include <stdbool.h>\
  7. \\#include <crtdbg.h>//VC only...
  8.  
  9. typedef struct Memory{
  10. 	void* Memory;
  11. 	size_t Length;
  12. 	size_t ESize;
  13. }Memory;
  14.  
  15. Memory ConstructMemory(size_t Length, size_t ElementSize){
  16. 	Memory M={ 0, };
  17.  
  18. 	M.Memory = calloc(Length, ElementSize);
  19. 	if (M.Memory == NULL) return M;
  20.  
  21. 	M.Length = Length;
  22. 	M.ESize = ElementSize;
  23.  
  24. 	return M;
  25. }
  26.  
  27. bool ResizeMemroy(Memory* M, size_t Length){
  28. 	void *T = NULL;
  29.  
  30. 	T= realloc(M->Memory, Length*M->ESize);
  31. 	if (errno == ENOMEM) return false;
  32. 	if (T != M->Memory)M->Memory = T;
  33. 	M->Length = Length;
  34.  
  35. 	return true;
  36. }
  37.  
  38.  
  39. bool AppendMemory(Memory* M, size_t Add){
  40. 	return ResizeMemroy(M, M->Length + Add);
  41. }
  42.  
  43. bool IsMemoryNull(Memory* M){
  44. 	return M->Memory == NULL;
  45. }
  46.  
  47. void DestructMemroy(Memory* M){
  48. 	free(M->Memory);
  49. 	M->Memory = NULL;
  50. 	M->Length = 0;
  51. 	M->ESize = 0;
  52. }
  53.  
  54. int main(){
  55. 	char F[] = "I am ";
  56. 	char L[] = "Bob.";
  57.  
  58. 	Memory M = ConstructMemory(strlen(F)+1, sizeof(char));
  59. 	if (IsMemoryNull(&M) == true) exit(1);
  60.  
  61. 	strcat(M.Memory, F);
  62.  
  63. 	printf("Memory is '%s'\n", M.Memory);
  64.  
  65. 	if (AppendMemory(&M, strlen(L)) == false) {
  66. 		DestructMemroy(&M);
  67. 		exit(1);
  68. 	}
  69. 	strcat(M.Memory, L);
  70.  
  71. 	printf("Memory is '%s'\n", M.Memory);
  72.  
  73. 	DestructMemroy(&M);
  74.  
  75. 	printf("Done!\n");
  76.  
  77. 	//_CrtCheckMemory();//vc only...
  78. 	return 0;
  79.  
  80. }
Success #stdin #stdout 0s 2140KB
comments (?)
stdin
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Standard input is empty
stdout
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Memory is 'I am '
Memory is 'I am Bob.'
Done!
https://ideone.com/lTOnWX
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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