Hint: Steps for developing the program
Don't proceed to the following step until you can "prove" that the current step works.
- Count the number of a's in the file.
- After processing that file for a's, add code to count the number of b's.
- Convert the program to count the number of a given letter inside a loop that goes from 'a' to 'z'. (A for loop can iterate through letters)
- Write a separate program to count the number of a's in each line.
- Combine the two programs