64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
|
|
/*
|
|
** take an unsigned integer and give a string
|
|
*/
|
|
|
|
/*
|
|
** #include <stdio.h> // for printf
|
|
** #include <stdlib.h> // for atoi
|
|
**
|
|
** char *ft_utoa(unsigned long int n);
|
|
**
|
|
** int main(int ac, char **av)
|
|
** {
|
|
** if (ac == 0)
|
|
** return (0);
|
|
** else if (ac == 2)
|
|
** printf("%s\n",ft_utoa(atoi(av[1])));
|
|
** else
|
|
** {
|
|
** unsigned long int i;
|
|
** i = 0;
|
|
** printf(" %lu\n %s\n\n",i,ft_utoa(i));
|
|
** i = 237683;
|
|
** printf(" %lu\n %s\n\n",i,ft_utoa(i));
|
|
** i = 1234567;
|
|
** printf(" %lu\n %s\n\n",i,ft_utoa(i));
|
|
** i = 12345678;
|
|
** printf(" %lu\n %s\n\n",i,ft_utoa(i));
|
|
** i = 2147483646;
|
|
** printf(" %lu\n %s\n\n",i,ft_utoa(i));
|
|
** i = 2147483647;
|
|
** printf(" %lu\n %s\n\n",i,ft_utoa(i));
|
|
** i = 2147483648;
|
|
** printf(" %lu\n %s\n\n",i,ft_utoa(i));
|
|
** i = 2147483649;
|
|
** printf(" %lu\n %s\n\n",i,ft_utoa(i));
|
|
** i = 9223372036854775807;
|
|
** printf("| %lu\n| %s\n\n",i,ft_utoa(i));
|
|
** }
|
|
** return 0;
|
|
** }
|
|
*/
|
|
|
|
#include "libft.h"
|
|
|
|
char *ft_utoa(unsigned long int n)
|
|
{
|
|
char *str;
|
|
int len;
|
|
unsigned long int cpy;
|
|
|
|
cpy = n;
|
|
len = 1;
|
|
while (n /= 10)
|
|
len++;
|
|
if (!(str = (char *)malloc(sizeof(char) * (len + 1))))
|
|
return (NULL);
|
|
str[len] = '\0';
|
|
str[--len] = cpy % 10 + '0';
|
|
while (cpy /= 10)
|
|
str[--len] = cpy % 10 + '0';
|
|
return (str);
|
|
}
|