String Reverse

//
//  main.m
//  String Reverse
//
//  Created by Steve on 11/8/12.
//  Copyright (c) 2012 Personal. All rights reserved.
//

#import <Foundation/Foundation.h>

void strrev(char * s) {
    char * front = s;
    char * end = s + strlen(s) - 1;

    while (front < end) {
        char c = *front;

        *front = *end;
        *end = c;
        front++;
        end--;
    }
}

int main(int argc, const char * argv[])
{
    char * testString = "This is a string to be reversed.";
    char modifiableString[strlen(testString) + 1];
    strcpy(modifiableString, testString);

    printf("%s\n", modifiableString);
    strrev(modifiableString);
    printf("%s\n", modifiableString);

    return 0;
}