File Hider prototype

#import <Foundation/Foundation.h>

int main(int argc, char const *argv[])
{
    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];

    BOOL option;
    int choice;
    int condition = 0;

    do {
        system("clear");
        printf("Show/hide hidden files\n1) Show hidden files.\n2) Hide hidden files.\n0) Exit Progeram");
        printf("\nPlease input your choice: ");
        scanf("%d", &choice);
        // this block seems redundant....

        @try{
        if(choice == 1)
            option = YES;
        else if(choice == 2)
            option = NO;
        else if(choice == 0)
            condition = 3;
        else
            condition = 4;
        }

        @catch (NSException* e) {
            system("clear");
            printf("INVALID INPUT!");
            condition = 3;
        }
        if(condition < 3) {
            NSString* state = option ? @"YES":@"NO";
            NSString* commandString = [[NSString alloc] initWithFormat: @"defaults write com.apple.Finder AppleShowAllFiles %@", state];
            system([commandString cString]);
            [commandString release];
            [state release];
            system("clear");
            printf("Your files are now ");
            if(option)
                printf("visible.");
            else
                printf("hidden");
            printf("\nHold the option/alt key and right click the finder icon, select \"Relaunch\"\n\n");

            getchar();
            printf("Would you like to exit?\n1) yes\n2) no\nEnter your input: ");
            int yesNo;
            scanf("%d", &yesNo);
            if(yesNo == 1)
                condition = 3;
        }

    } while(condition < 3);
    [pool drain];
    return 0;
}