Help with malloc() Post: 302775571

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Top Forums UNIX for Dummies Questions & Answers Help with malloc() Post 302775571 by shamrock on Tuesday 5th of March 2013 05:39:41 AM

03-05-2013

Registered User

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...

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LEARN ABOUT MINIX

gets

GETS(3) 						     Library Functions Manual							   GETS(3)

NAME

       gets, fgets - get a string from a stream

SYNOPSIS

       #include <stdio.h>

       char *gets(char *s)
       char *fgets(char *s, int n, FILE *stream)

DESCRIPTION

       Gets  reads  a string into s from the standard input stream stdin.  The string is terminated by a newline character, which is replaced in s
       by a null character.  Gets returns its argument.

       Fgets reads n-1 characters, or up through a newline character, whichever comes first, from the stream into the string s.  The last  charac-
       ter read into s is followed by a null character.  Fgets returns its first argument.

SEE ALSO

       puts(3), getc(3), scanf(3), fread(3), ferror(3).

DIAGNOSTICS

       Gets and fgets return the constant pointer NULL upon end of file or error.

BUGS

       Gets deletes a newline, fgets keeps it, all in the name of backward compatibility.

       Gets is not present in the Minix-vmd C library for reasons that should be obvious.  Use fgets instead.

7th Edition							   May 15, 1985 							   GETS(3)

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