# 1GFName the angle 4 different ways.1EL

## Answers

Answer & Explanation:

This program is written in C++ and it combines the step 1 and step 2 to create a menu driven program

Each line makes use of comments (as explanation)

Also, see attachment for program file

Program Starts Here

//Put Your Name Here; e.g. MrRoyal

//This program calculates the area of circle, triangle and square; depending on the user selection

//The next line include necessary header file

#include<iostream>

using namespace std;

int main()

{

//The next line defines variable pi as a constant with float datatype

const float pi = 3.14159;

// The next two lines declares all variables that'll be needed in the program

string choice;

float length, base, height, radius, area;

// The next four lines gives an instruction to the user on how to make selection

cout<<"Press 1 to calculate area of a square: "<<endl;

cout<<"Press 2 to calculate area of a circle: "<<endl;

cout<<"Press 3 to calculate area of a triangle: "<<endl;

cout<<"Press 4 to quit: "<<endl;

//This next line prompts user for input

cout<<"Your choice: ";

//This next line gets user input and uses it to determine the next point of execution

cin>>choice;

if(choice == "1") //If user input is 1, then the choice is area of square

{

cout<<"Length: "; //This line prompts user for length of the square

cin>>length; // This line gets the length of the square

area = length * length; //This line calculates the area

cout<<"Area: "<<area; //This line prints the calculated area

}

else if(choice == "2") //If user input is 2, then the choice is area of circle

{

cout<<"Radius: "; //This line prompts user for radius

cin>>radius; //This line gets radius of the circle

area = pi * radius * radius; // This line calculates the area

cout<<"Area: "<<area; //This line prints the calculated area

}

else if(choice == "3") //If user input is 2, then the choice is area of triangle

{

cout<<"Base: "; //This line prompts user for base

cin>>base; //This line gets the base

cout<<"Height: "; //This line prompts user for height

cin>>height; //This line gets the height

area = 0.5 * base * height; //This line calculates the area

cout<<"Area: "<<area; //This line prints the calculated area

}

else if(choice == "4") //If user input is 4, then the choice is to quit

{

//Do nothing and quit

}

else //Any other input is invalid

{

cout<<"Invalid Option Selected";

}

return 0;

}

Angle 1

Angle BAC

Angle CAB

Angle A

They are BAC, CAB, ABC, and BCA