graphs/piscine/str_revert/str_revert.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

#include "str_revert.h"

#include <stddef.h>

void str_revert(char str[])
{
    if (*str == '\0')
    {
        return;
    }

    size_t len = 0;
    for (; str[len]; len++)
    {
        continue;
    }
    len--;

    for (size_t i = 0; i <= len / 2; i++)
    {
        char tmp = str[i];
        str[i] = str[len - i];
        str[len - i] = tmp;
    }
}