atoi()

Convert a string into an integer

Synopsis:

#include <stdlib.h>

int atoi( const char* ptr );

Arguments:

ptr

A pointer to the string to parse.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The atoi() function converts the string pointed to by ptr to an int.

Returns:

The converted integer.

Examples:

#include <stdlib.h>
#include <stdio.h>

int main( void )
{
    int x;

    x = atoi( "-289" );
    printf( "x = %d\n", x );
    return EXIT_SUCCESS;
}

produces the output:

x = -289

Classification:

ANSI, POSIX 1003.1

See also:

atol(), itoa(), ltoa(), sscanf(), strtol(), strtoul(), ultoa(), utoa()