ft_is_num.c File Reference

#include "libft.h"

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Functions
int	ft_is_num (const char *n)

Function Documentation

ft_is_num()

int ft_is_num

(

const char *

n

)

Definition at line 15 of file ft_is_num.c.

{
    unsigned long   i;
 
    i = 0;
    while (n[i] && (n[i] == '\t' || n[i] == '\n' || n[i] == '\v'
            || n[i] == '\f' || n[i] == '\r' || n[i] == ' '))
        i++;
    if (n[i] && (n[i] == '+' || n[i] == '-'))
        i++;
    if (!n[i])
        return (FALSE);
    while (n[i])
    {
        if (!ft_isdigit(n[i]))
            return (FALSE);
        i++;
    }
    return (TRUE);
}

References FALSE, ft_isdigit(), and TRUE.

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