Chapter 8, Problem 8.6E

Program Plan Intro

Program Plan: 

• Declare an array s of a character type to store the line of text.
• Declare integer type variable i and j to use as a control variable for while loops.
• Use function fgets() to read the line of text from the user in array s.
• Use a while loop to scan through every element of array s and then use tolower and toupper to print the string in lower case and uppercase respectively.

Program Description: 

The following program will input a line of text and output the text in uppercase and lowercase letters.