removeExtraSpaces()

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

#import <Foundation/Foundation.h>

char * removeExtraSpaces(char * s) {
    char * retval = malloc(strlen(s) + 1);
    char * out = retval;

    int isSpaces = 0; // Indicates whether we're currently copying/reducing a series of one or more spaces.

    while (*s) {
        if (*s != ' ' || !isSpaces) {
            isSpaces = (*s == ' ');
            *out++ = *s;
        }
        s++;
    }
    *out = 0;

    return retval;
}

int main(int argc, const char * argv[])
{
    char * testString = "This has      a bunch of spaces.";

    printf("%s\n", testString);
    printf("%s\n", removeExtraSpaces(testString));

    return 0;
}