fork(3) download 
  1. #include <stdio.h>
  2. void ignore_string(char*& s, char*& p, char c);
  3. char* remove_comments(char* s);
  4.  
  5. int main(void){
  6. 	char s[] = "int/*space*/a = 10;\nchar s[] = \"//code\";\nchar c = '\"';\n"\
  7. 	           "char* f = \"/**///\";\n//break\EOF\end\nint e = EOF;//конец";
  8. 	puts( remove_comments(s) );
  9. 	return 0;
  10. }
  11.  
  12.  
  13. //удаление комментариев за один проход с затиранием
  14. char* remove_comments(char* s){
  15. 	char* i, *t = s;
  16. 	for(char* p = s; *s; *s = *p){
  17. 		if((*p == '"') || (*p == '\''))
  18. 			ignore_string(s, p, *p);
  19. 		else if((*p == '/') && (*(p + 1) == '/')){ //однострочные комментария
  20. 			i = p + 2;
  21. 			while(*i && (*i != '\r') && (*i != '\n'))
  22. 				++i;
  23. 			p = i;
  24. 		} else if((*p == '/') && (*(p + 1) == '*')){ //многострочные комментарии
  25. 			i = p + 2;
  26. 			while(*i){
  27. 				if((*i == '*') && (*(i + 1) == '/')){
  28. 					i += 2;
  29. 					break;
  30. 				}
  31. 				++i;
  32. 			}
  33. 			p  = i - 1;
  34. 			*p = ' ';
  35. 		} else
  36. 			++s, ++p;
  37. 	}
  38. 	return t;
  39. }
  40.  
  41. //пропуск
  42. void ignore_string(char*& s, char*& p, char c){
  43. 	char* i = p + 1;
  44. 	while(*i && (*i != c)){
  45. 		if(*i == '\\'){
  46. 			if(! *++i)
  47. 				break;
  48. 		}
  49.         ++i;
  50. 	}
  51. 	if(*i == c)
  52. 		++i;
  53.  
  54. 	while(p != i)
  55. 		*s++ = *p++;
  56. }
Success #stdin #stdout 0s 16064KB
comments (?)
stdin 
Standard input is empty
stdout 
int a = 10;
char s[] = "//code";
char c = '"';
char* f = "/**///";

int e = EOF;
https://ideone.com/fkAcXM
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!