Question

I have the following code, but it only reads lowercase letters. Ideally, it would read both upper and lower case letters and then store this info in an array. Any help or suggestions would be welcome.

Cheers.

Answer 1

There are several problems with the code above but to answer your question directly, simply do some kind of check before incrementing the letterCount

if ( letter >= 'a' )
   letterCount[int(letter)-'a']++;
else
   letterCount[int(letter)-'A']++;

IMPORTANT:

This is not initializing the array to zeros, its just setting the first item to zero then the rest are garbage.

int letterCount[26] = {0}; 

to set the whole array to zero you have to iterate with a for loop and set each one to 0, manually type it out like {0, 0, 0, 26 times … }, or use memset() to clear it all at once.