将字符串逆转

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

void reverse(char *str);

int main()
{
    char str[128];
    while(gets_s(str,128) != NULL)
    {
        //deleteSpace(str);
        reverse(str);
        puts(str);
    }
    system("pause");
    return 0;
}


void reverse(char *str)
{
    int beg = 0;
    int end = strlen(str)-1;
    char temp;
    while(beg < end)
    {
        temp = str[beg];
        str[beg] = str[end];
        str[end] = temp;
        beg++;
        end--;
    }
}