USING PYTHON PROGRAMMING AND WHILE LOOPS DO NOT USE BREAK,PASS,CONTINUE. DO NOT USE BUILT-IN FUNCTIONS AND FOR LOOPS

For this part of the homework you will create a

program that asks the user for

a string and a letter, an

d then counts how many times that letter appears in

the string. You must create a function called

numLetter()

that handles

counting the number of times the letter appears

, and prints out the results

. It

must be case

in

sensitive.

The program must contain

a

main()

and a function called

numLetter()

,

implemented as described in the function header comment given below.

(You should include this function header comment in your own code.)

###########################################################

# numLetter(

) counts the instances of a letter

in

a string

# Input: aString; a string of the phrase to search in

# letter; a single character to search for

# Output: None

SAMPLE OUTPUT:

bash

-

4.1$ python hw5_part1.py

Enter a string:

Dogs are good, dogs are great.

Enter a letter to search for:

d

There are 3 instances of d in the string

bash

-

4.1$ python hw5_part1.py

Enter a string:

Peter

Piper picked a peck of pickled

peppers!

Enter a letter to search for:

P

There are 9 instances of P in the string

bash

-

4.1$ python hw5_part1.py

Enter a string:

act tta aga agg aga tat acc atg ggt tct

Enter a letter to search for:

G

There are 7 instances o

f G in the string