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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. typedef struct replace
  5. {
  6. 	const char *from, *to;
  7. } replace;
  8.  
  9. char* strreplace(char *str, const replace *replaces)
  10. {
  11. 	char *s = str;
  12. 	while (*s)
  13. 	{
  14. 		const replace *r = replaces;
  15. 		while (r->from)
  16. 		{
  17. 			int len_from = strlen(r->from);
  18. 			if (strncmp(s, r->from, len_from) == 0)
  19. 			{
  20. 				int len_to = strlen(r->to);
  21. 			    memmove(s+len_to, s+len_from, strlen(s+len_from)+1);
  22. 			    memcpy(s, r->to, len_to);
  23. 			    s += len_to - 1;
  24. 				break;
  25. 			}
  26.  
  27. 			++r;
  28. 		}
  29.  
  30. 		++s;
  31. 	}
  32.  
  33. 	return str;
  34. }
  35.  
  36. int main(void) {
  37.     char string3[200] = "Hallo, diese Nachricht wird ersetzt. Dieser Quelltext gehoert zu den Systemen.";
  38.     replace replaces[] =
  39.     {
  40.     	{ "en", "x"},
  41.     	{ "x", "en"},
  42.     	{ "er", "q"},
  43.     	{ "q", "er"},
  44.     	{ "y", "ch"},
  45.     	{ "ch", "y"},
  46.     	{ "a", "o"},
  47.     	{ "o", "a"},
  48.     	{ NULL, NULL }
  49.     };
  50.  
  51.     printf("Vorher: %s\n", string3);
  52.  
  53.     printf("Nachher: %s\n", strreplace(string3, replaces));
  54.  
  55. 	return 0;
  56. }
  57.  
  58.  
  59.  
Success #stdin #stdout 0s 4360KB
comments (?)
stdin
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Standard input is empty
stdout
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Vorher: Hallo, diese Nachricht wird ersetzt. Dieser Quelltext gehoert zu den Systemen.
Nachher: Holla, diese Noyriyt wird qsetzt. Diesq Quellteent gehaqt zu dx Schstemx.
https://ideone.com/Q9b8CH
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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