strchr trouble

This is a discussion on strchr trouble within the C Programming forums, part of the General Programming Boards category; Hi all! This code should work, but it doesn't: Code: #include <stdio.h> int main(void) { char *pos; char buf[100]; FILE ...

  1. #1
    Registered User
    Join Date
    Sep 2009
    Posts
    61

    strchr trouble

    Hi all!

    This code should work, but it doesn't:

    Code:
    #include <stdio.h>
    
    int main(void)
    {
    	char *pos;
    	char buf[100];
    	FILE *fp;
    		fp = fopen("text.txt","r");
    	
    		fgets(buf, 100, fp);
    		pos = strchr(buf, '~');
    		if (pos){
    			printf("Character '~' found at position %d.\n", pos - buf);
    		}
      
    
    	fclose(fp);
        return 0;
    
    }
    When I try to compile it I get this:
    warning: incompatible implicit declaration of built-in function 'strchr'.

    What's wrong with the code?

    Thanks in advance for help

  2. #2
    Registered User hk_mp5kpdw's Avatar
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    Perhaps...
    Code:
    #include <string.h>
    "Owners of dogs will have noticed that, if you provide them with food and water and shelter and affection, they will think you are god. Whereas owners of cats are compelled to realize that, if you provide them with food and water and shelter and affection, they draw the conclusion that they are gods."
    -Christopher Hitchens

  3. #3
    DESTINY BEN10's Avatar
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    Have you included string.h header?
    HOPE YOU UNDERSTAND.......

    By associating with wise people you will become wise yourself
    It's fine to celebrate success but it is more important to heed the lessons of failure
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  4. #4
    Registered User
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    hurray The string header worked

    Thanks

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