/**
 * upper.c
 *
 * Andi Peng <andi.peng@yale.edu>
 * Section, Week 2
 * 
 * Converts a lowercase string to uppercase
 */
 
 #include <stdio.h>
 #include <cs50.h>
 #include <string.h>
 
 int main(void)
 {
     printf("Type in something in lowercase\n");
     string s = GetString();
     
     for (int i = 0, n = strlen(s); i < n; i++)
     {
         s[i] = s[i] - ('a' - 'A');
         printf("%c\n", s[i]);
     }
 }