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Full Discussion: Help with malloc()
Top Forums UNIX for Dummies Questions & Answers Help with malloc() Post 302775571 by shamrock on Tuesday 5th of March 2013 05:39:41 AM
Old 03-05-2013
Quote:
Originally Posted by eracav
Good day! I'm a newbie in C. I'm trying to get an unlimited input from the user using malloc then printing the inputs after the user presses enter. My code works, but there's a warning that I don't know how to fix. Please help me. Thank you.

Here's my code:
Code:
 
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main () {

    char* pointer = malloc(sizeof(char*));
    fgets(pointer, malloc(sizeof(char*)), stdin);
    puts(pointer);


    return 0;

}

I get the warning: passing of argument 2 of 'fgets' makes integer from pointer without a cast

What does that mean? Thank you very much
Because the second argument of fgets is an integer while malloc returns pointer to void so take it out...
This User Gave Thanks to shamrock For This Post:
eracav
 

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LEARN ABOUT DEBIAN

explain_fgets_or_die

explain_fgets_or_die(3) 				     Library Functions Manual					   explain_fgets_or_die(3)

NAME

       explain_fgets_or_die - input of strings and report errors

SYNOPSIS

       #include <libexplain/fgets.h>
       char *explain_fgets_or_die(char *data, int data_size, FILE *fp);

DESCRIPTION

       The  explain_fgets_or_die function is used to call the fgets(3) system call.  On failure an explanation will be printed to stderr, obtained
       from explain_fgets(3), and then the process terminates by calling exit(EXIT_FAILURE).

       This function is intended to be used in a fashion similar to the following example:
	      explain_fgets_or_die(data, data_size, fp);

       data    The data, exactly as to be passed to the fgets(3) system call.

       data_size
	       The data_size, exactly as to be passed to the fgets(3) system call.

       fp      The fp, exactly as to be passed to the fgets(3) system call.

       Returns:
	       This function only returns on success; data when a line is read, or NULL on end-of-file.  On failure,  prints  an  explanation  and
	       exits.

SEE ALSO

       fgets(3)
	       input of strings

       explain_fgets(3)
	       explain fgets(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2008 Peter Miller

															   explain_fgets_or_die(3)
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