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  1. #include <stdio.h>
  2.  
  3. int remove_area(char* s, char fc, char lc){
  4. 	int   n, k;
  5. 	char* p, *i;
  6.  
  7. 	for(k = n = 0, p = s; *p; ++p){
  8. 		if(*p == fc){
  9. 			++n;
  10. 			k = 1;
  11. 		} else if(*p == lc){
  12. 			--n;
  13. 			k = 1;
  14. 		}
  15. 	}
  16. 	if(n != 0 || !k)
  17. 		return 0;
  18.  
  19. 	while(*s && (*s != fc))
  20. 		++s;
  21.  
  22. 	for(p = s; *s; *s = *p){
  23. 		if(*p != fc)
  24. 			++s;
  25. 		else {
  26. 			*(++s) = *p;
  27. 			i      = p + 1;
  28. 			while(*i && (*i != lc))
  29. 				++i;
  30. 			p = i;
  31. 			continue;
  32. 		}
  33. 		++p;
  34. 	}
  35. 	return 1;
  36. }
  37.  
  38. int main(void){
  39. 	char s[] = "(ops) sector (area) (2012)() end (X)";
  40.  
  41. 	puts(s);
  42. 	if(! remove_area(s, '(', ')') )
  43. 		puts("error");
  44. 	else
  45. 		puts(s);
  46. 	getchar();
  47. 	return 0;
  48. }
  49.  
Success #stdin #stdout 0s 2160KB
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Standard input is empty
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(ops) sector (area) (2012)() end (X)
() sector () ()() end ()
https://ideone.com/hvgdHU
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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