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

char *encrypt(char *input);

int main()
{
    char *instructions= "Deliver the package to Brooklyn";
    printf("Here are your secret instructions:\n%s\n",encrypt(instructions));

    return(0);
}

char *encrypt(char *input)
{

    char output[122];
    int x=0;
    while(*input)
    {
        if(isalpha(*input))
            output[x]= *input+1;
        else
            output[x]=*input;
        input++;
        x++;
    }
    return putout;

}