// Function to print out a string that has had it's cases swapped.
// swap_case.c
//
// This program was written by YOUR-NAME-HERE (z5555555)
// on INSERT-DATE-HERE
 
#include <stdio.h>

int swap_case(int character);

int main(void) {

    // TODO: Write this function, using the swap_case function.

    return 0;
}

int swap_case(int character) {
    // TODO: Write this function, which should:
    //  - return character in lower case if it is an upper case letter
    //  - return character in upper case if it is an lower case letter
    //  - return the character unchanged otherwise

    return 'x';
}