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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <stdlib.h>
  4.  
  5. //The related variables are treated together in the structure. and Avoid using global variables.
  6. typedef struct {
  7. 	int entries;
  8. 	int mem_allocated;
  9. 	char **data;
  10. } Entry;
  11.  
  12. void add_Entry(const char *p, Entry *dp);
  13.  
  14. int main(void) {
  15. 	const char *p0 = "ksdfahj93qhf9";
  16. 	const char *p1 = "siodfnrieopq";
  17. 	const char *p2 = "erf9ih94gri9g";
  18.  
  19. 	Entry dp = { 0 };//initialize
  20.  
  21. 	add_Entry(p0, &dp);
  22. 	add_Entry(p1, &dp);
  23. 	add_Entry(p2, &dp);
  24.  
  25. 	for(int i = 0; i < dp.entries; i++) {
  26. 		printf("%s\n", dp.data[i]);
  27. 		free(dp.data[i]);
  28. 	}
  29. 	free(dp.data);
  30. }
  31. void add_Entry(const char *p, Entry *dp){
  32. 	if(dp->entries == dp->mem_allocated)
  33. 		dp->mem_allocated += 3;
  34.  
  35. 	void *temp = realloc(dp->data, dp->mem_allocated * sizeof(*dp->data));
  36. 	if(!temp){
  37. 		perror("Memory allocation failed!");
  38. 		exit(EXIT_FAILURE);
  39. 	}
  40. 	dp->data = temp;
  41.  
  42. 	temp = malloc(strlen(p)+1);
  43. 	if(!temp){
  44. 		perror("Memory allocation failed!");
  45. 		exit(EXIT_FAILURE);
  46. 	}
  47. 	dp->data[dp->entries++] = strcpy(temp, p);
  48. }
Success #stdin #stdout 0s 9424KB
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Standard input is empty
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ksdfahj93qhf9
siodfnrieopq
erf9ih94gri9g
https://ideone.com/0Ft10C
language:
C99 (gcc 8.3)
created:
8 years ago
visibility:
public

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