/* CS261- Assignment 1 - Q5.c
 * Sean McGlothlin
 * 10/4/12
 * Solution description:
 */

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

#define LENGTH 20

/*converts ch to upper case, assuming it is in lower case currently*/
char toUpperCase(char ch){
     return ch-'a'+'A';
}


/*converts ch to lower case, assuming it is in upper case currently*/
char toLowerCase(char ch){
     return ch-'A'+'a';
}


void sticky(char *word){

    int testLower = 0;
    int testUpper = 0;

    for(int i = 0; i < LENGTH; i++) {

        if(i % 2 == 1) {
            testLower = atoi(word[i]);
            if(testLower > 64 && testLower < 91) {   // ASCII values for upper case letters
                word[i] = toLowerCase(word[i]);
            }
        }
        if(i % 2 == 0) {
            testUpper = atoi(word[i]);
            if(testUpper > 96 && testUpper < 123) {  // ASCII values for lower case letters
                word[i] = toUpperCase(word[i]);
            }
        }
    }
     /*Convert to sticky caps*/
}


int main(){

    char word[LENGTH];

    printf("Enter a word (max 20 chars): \n");
    scanf("%s", &word);

    sticky(word);

    printf("%s\n", word);

    return 0;
}