Programming Fundamentals

For this exercise, make a program called cs_calculator.c which will scan in instructions until End-Of-Input (which we enter to our terminal with the keyboard shortcut CTRL-D) and prints the output as specified below. An instruction is a character, followed by one or two positive integers.

The first character identifies what type the instruction is.

• If the first character in the instruction is 's', then your program should print out the square of the next number in the instruction.
• If the first character in the instruction is 'p', then your program should print out the value of the next number raised to the power of the number after next.

Examples

dcc cs_calculator.c -o cs_calculator
./cs_calculator
Enter instruction: s 2
4
Enter instruction: p 5 3
125
Enter instruction: s 4
16
Enter instruction: p 3 4
81
Enter instruction: 
./cs_calculator
Enter instruction: p 3 3
27
Enter instruction: s 10
100
Enter instruction: 

One major challenge of this exercise is figuring out how to use scanf effectively. The lessons you learn in this exercise regarding scanf will be useful in assignment 1!

Assumptions/Restrictions/Clarifications

• You can assume that the first character in the instruction is only either 's' or 'p'
• You can assume that for each instruction, the correct number of successive positive integers will be given.
• The autotest for this exercise expects your program to end WITHOUT a new line character when the user presses Ctrl-D. This means that the command prompt for the next command should be on the same line as the end of your program.