C 练习实例35

实例

#include <stdio.h>
 
void reverse(char* s)
{
    /* 获取字符串长度 */
    int len = 0;
    char* p = s;
    while (*p != 0)
    {
        len++;
        p++;
    }
    
    /* 交换 ... */
    int i = 0;
    char c;
    while (i <= len / 2 - 1)
    {
        c = *(s + i);
        *(s + i) = *(s + len - 1 - i);
        *(s + len - 1 - i) = c;
        i++;
    }
}
 
int main()
{
    char s[] = "www.w3ccoo.com";
    printf("'%s' =>\n", s);
    reverse(s);           /* 反转字符串 */
    printf("'%s'\n", s);
    return 0;
}

'www.w3ccoo.com' =>
'moc.boonur.www'