(C) Convert string to all lower case

[Neo_Reloaded]

By Chernobyl

Here is a little program i wrote (its actually the first Exercise of my college homework lol), what it does is it takes a string from the user and converts all upper case letters to lower case

/*
    Exercise 1
    By Stephen V (Chernobyl)
    WwW.Console-World.Org
*/

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

void main()
{
    char str[50];
    short int x = 0;

    printf("Please enter a string: ");
    gets(str);

    while(str[x] != '\0')
    {
        if(isupper(str[x]))
            printf("%c", tolower(str[x]));
        else
            printf("%c", str[x]);

        x++;
    }

    printf("\n\nPress ENTER to continue!");
    getchar();
}