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


int main(int argc, const char * argv[])
{
    char word[4], cont='y';
    int digit[4], length=0, i;

    while(cont=='y'){

    printf("please enter a word"); fflush(stdin); scanf("%s", word);
        length = strlen(word);
        if(length>4){ printf("please enter a word only 4 letters long\n"); return 0;}

        for(i=0;i<=4;i++){
            switch(word[i]){
                case 'a': case 'b': case 'c':
                    digit[i]=2;
                    break;

                case 'd': case 'e': case 'f':
                    digit[i]=3;
                    break;

                case 'g': case 'h': case 'i':
                    digit[i]=4;
                    break;

                case 'j': case 'k': case 'l':
                    digit[i]=5;
                    break;

                case 'm': case 'n': case 'o':
                    digit[i]=6;
                    break;

                case 'p': case 'q': case 'r': case 's':
                    digit[i]=7;
                    break;

                case 't': case 'u': case 'v':
                    digit[i]=8;
                    break;

                case 'w': case 'x': case'y': case 'z':
                    digit[i]=9;
                    break;

            }

            i++;
        }

    printf("The code that your word represents is %d%d%d%d\n", digit[0], digit[1], digit[2], digit[3]);
    printf("Would you like to enter another word? Enter 'y' to continue, 'n' to exit: ");
    fflush(stdin);
    scanf("%c", &cont);

    }
     return 0;

    }