use of colon in C

This is a discussion on use of colon in C within the C Programming forums, part of the General Programming Boards category; Code: FILE *fp = fopen ("file.txt", "r"); if (fp != 0){ do{ x = 0; do{ a = fgetc (fp); ...

  1. #1
    Registered User
    Join Date
    Dec 2007
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    67

    use of colon in C

    Code:
    FILE *fp = fopen ("file.txt", "r");
    	if (fp != 0){
        do{
    	x = 0;
    	do{
    	a = fgetc (fp);
    	if (a != ' ' && a != '\n' && 
    		a != EOF && a !=',' && 
    		a !=';' && a !='.'&& 
    		a !='!' && a !='?'
                    a != ':'){
    	  word[x] = a;
    	  x++;
    	  }else{
    	if (x != 0){
    		word[x] = '\0';
    	    t = insertList (word, t);
    		}
    	}
          }while (a != ' ' && a != '\n' && 
    			  a != EOF && a !=',' && 
    			  a !=';' && a !='.'&& 
    			  a !='!' && a !='?'
                              a != ':');
    the function reads in characters from a file and puts the words into a list, apart from the characters specified in ' '. when i specify a colon as a character i want excluded i get a lot of errors from a compiler. how can i fix that?
    Last edited by Salem; 01-01-2008 at 09:32 AM. Reason: Fix code tags

  2. #2
    Registered User
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    Sep 2006
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    8,868
    Quote Originally Posted by agentsmith View Post
    Code:
    FILE *fp = fopen ("file.txt", "r");
    	if (fp != 0){
        do{
    	x = 0;
    	do{
    	a = fgetc (fp);
    	if (a != ' ' && a != '\n' && 
    		a != EOF && a !=',' && 
    		a !=';' && a !='.'&& 
    		a !='!' && a !='?'
                    a != ':'){
    	  word[x] = a;
    	  x++;
    	  }else{
    	if (x != 0){
    		word[x] = '\0';
    	    t = insertList (word, t);
    		}
    	}
          }while (a != ' ' && a != '\n' && 
    			  a != EOF && a !=',' && 
    			  a !=';' && a !='.'&& 
    			  a !='!' && a !='?'
                              a != ':');
    the function reads in characters from a file and puts the words into a list, apart from the characters specified in ' '. when i specify a colon as a character i want excluded i get a lot of errors from a compiler. how can i fix that?
    You forgot the && for the colon.

    Use a forward slash '/', rather than a backslash '\', for the code end tag, and your postings will looks much better.
    Last edited by Adak; 01-01-2008 at 06:06 AM.

  3. #3
    C++ Witch laserlight's Avatar
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    Singapore
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    23,775
    The problem is not the colon, but the missing && between a !='?' and a != ':'.

    By the way, the closing code bbcode tag is /code, not \code.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

  4. #4
    Registered User
    Join Date
    Dec 2007
    Posts
    67
    cheers problem fixed

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