Components of computer: Computer has four major components as follows: Central processing unit (CPU): CPU plays the key role in a computer by carrying out instructions of a computer program. It is basically known as the brain of the computer. It performs all the basic logic, arithmetic, controlling, and input/output operations that are specified by the instructions. Memory unit: Once computer program instructions set are transformed into machine code by CPU, then the machine code is stored in memory. Then the CPU fetches the required data and instructions from memory, perform the required operations and then sends the result and next set of instructions back to the memory. Input devices: Input devices are used by the user to feed information to computer, such as a hard drive, keyboard, or a networking card. These devices get the data from outside world into computer in the way that human eyes and ears bring the data to brain. Output devices: Output devices are used by computer to deliver the information to the user, such as a monitor, printer, and speaker. The CPU takes the machine code present in memory and converts it into a format that is required by monitor’s hardware. Then the monitor’s hardware alters that information into different light intensities such as words or pictures are seen.

Question

I need to develop and run a program that prompts the user to enter a positive integer n, and then calculate the value of n factorial n! = multiplication of all integers between 1 and n, and print the value n! on the screen. This is for C*.

Answer 1

Question

Chapter 3, Problem 2RQ

Program Plan Intro

Components of computer:

Computer has four major components as follows:

Central processing unit (CPU):

CPU plays the key role in a computer by carrying out instructions of a computer program.

It is basically known as the brain of the computer.

It performs all the basic logic, arithmetic, controlling, and input/output operations that are specified by the instructions.

Memory unit:

Once computer program instructions set are transformed into machine code by CPU, then the machine code is stored in memory.

Then the CPU fetches the required data and instructions from memory, perform the required operations and then sends the result and next set of instructions back to the memory.

Input devices:

Input devices are used by the user to feed information to computer, such as a hard drive, keyboard, or a networking card.

These devices get the data from outside world into computer in the way that human eyes and ears bring the data to brain.

Output devices:

Output devices are used by computer to deliver the information to the user, such as a monitor, printer, and speaker.

The CPU takes the machine code present in memory and converts it into a format that is required by monitor’s hardware.

Then the monitor’s hardware alters that information into different light intensities such as words or pictures are seen.

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