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-   -   removing comments in c and c++ program (http://www.daniweb.com/code/snippet773.html)

rohit83.ken c syntax
Oct 23rd, 2007
hello frnd this a c program that removes c c++ style comments
 

  1. //program to print a file by removing comments
  2. /*program*/
  3. #include<stdio.h>
  4. void main(int argc , char *argv[])
  5. {
  6. 	FILE *fp,*fp1;
  7. 	char ch;
  8.  	clrscr();
  9.         fp=fopen(argv[1],"r");
  10. 	fp1=fopen(argv[2],"w");                                     
  11. 	while(1)
  12. 	{
  13. 		ch=fgetc(fp);  /*fgetc*/
  14. 		if(ch==EOF)    //eof
  15. 		break;
  16. 		else
  17. 		{
  18. 			if(ch=='/')
  19. 			{
  20. 				ch=fgetc(fp);
  21. 				if(ch=='/')
  22. 				{
  23. 					while(1)
  24. 					{
  25. 						ch=fgetc(fp);
  26. 						if(ch=='\n')
  27. 						goto label;
  28. 					}
  29.  
  30. 				}
  31. 				if(ch=='*')
  32. 				{
  33. 					while(1)
  34. 					{
  35. 						ch=fgetc(fp);
  36. 						if(ch=='*')
  37. 						{
  38. 							ch=fgetc(fp);
  39. 							if(ch=='/')
  40. 							{
  41. 								while(1)
  42. 								{
  43. 									ch=fgetc(fp);
  44. 									goto label;
  45. 								}
  46. 							}
  47. 							else printf("*");
  48. 						}
  49. 					}
  50. 				}
  51. 				else printf("/");
  52. 			}
  53. 		}
  54. 		label:fputc(ch,fp1);
  55. 	}
  56. 	fclose(fp); /*closes the file*/
  57. 	fclose(fp1);
  58. }