#include //main header file for input/output operations #include //declares a set of functions to compute common mathematical operations using namespace std; //to avoid using std repeatedly float getTriangleArea(float b,float h) //function used to find Area of Triangle { return (bh)/2; } float getTrianglePerimeter(float b,float h) //function to find Perimeter of Triangle { float hy=sqrt(bb+hh); //formula for finding hypotenuse return h+hy+b; //in order to return the perimeter } float getRectangleArea(float w,float l) //function used to find Area of Rectangle { return wl; } float getRectanglePerimeter(float w,float l) //function used to find Perimeter of Rectangle { return 2(w+l); } float getCircleArea(float r) //function used to find Area of Circle { return 3.14r*r; } float getCircleCircumference(float r) //function used to find circumference of Circle { return 3.14r2; } int main() //main function { int choice; //taking the input of choice float b, h, w, l, r; //used to take input of dimensions cout<<"Choose one from the choices \n1-Right Triangle \n2-Rectangle \n3-Circle \n"; //output to choose from the choices cin>>choice; if(choice==1) //if statement for the first choice { cout<<"Enter the base of the Triangle : "; cin>>b; if(!cin); cout<<"Enter the height of the Triangle : "; cin>>h; if(!cin); cout<<"\nThe Area of the Triangle is : "<>w; if(!cin); cout<<"Enter the length of the Rectangle : "; cin>>l; if(!cin); cout<<"\nThe Area of the Rectangle is : "<>r; if(!cin); cout<<"\nThe Area of the Circle is : "<

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

#include <iostream> //main header file for input/output operations

#include <math.h> //declares a set of functions to compute common mathematical operations

using namespace std; //to avoid using std repeatedly

float getTriangleArea(float b,float h) //function used to find Area of Triangle

{

return (b*h)/2;

}

float getTrianglePerimeter(float b,float h) //function to find Perimeter of Triangle

{

float hy=sqrt(b*b+h*h); //formula for finding hypotenuse

return h+hy+b; //in order to return the perimeter

}

float getRectangleArea(float w,float l) //function used to find Area of Rectangle

{

return w*l;

}

float getRectanglePerimeter(float w,float l) //function used to find Perimeter of Rectangle

{

return 2*(w+l);

}

float getCircleArea(float r) //function used to find Area of Circle

{

return 3.14*r*r;

}

float getCircleCircumference(float r) //function used to find circumference of Circle

{

return 3.14*r*2;

}

int main() //main function

{

int choice; //taking the input of choice

float b, h, w, l, r; //used to take input of dimensions

cout<<"Choose one from the choices \n1-Right Triangle \n2-Rectangle \n3-Circle \n"; //output to choose from the choices

cin>>choice;

if(choice==1) //if statement for the first choice

{

cout<<"Enter the base of the Triangle : ";

cin>>b;

if(!cin);

cout<<"Enter the height of the Triangle : ";

cin>>h;

if(!cin);

cout<<"\nThe Area of the Triangle is : "<<getTriangleArea(b,h)<<"\nThe Perimeter of the triangle is : "<<getTrianglePerimeter(b,h)<<endl;

}

else if(choice==2) //if statement for the second choice

{

cout<<"Enter the width of the Rectangle : ";

cin>>w;

if(!cin);

cout<<"Enter the length of the Rectangle : ";

cin>>l;

if(!cin);

cout<<"\nThe Area of the Rectangle is : "<<getRectangleArea(w,l)<<"\nThe Perimeter of the Rectangle is : "<<getRectanglePerimeter(w,l)<<endl;

}

else if(choice==3) //if statement for the third choice

{

cout<<"Enter the radius of the Circle : ";

cin>>r;

if(!cin);

cout<<"\nThe Area of the Circle is : "<<getCircleArea(r)<<"\nThe Perimeter of the triangle is : "<<getCircleCircumference(r)<<endl; //outputs the Area and Perimeter of the circle using stored variables

}

else{

cout<<"Please enter the correct Input"; //If the input is (!cin) which is invalid

}

return 0; //exit code of the program indicating successful completion of the program

my problem here is that, when the input is invalid it doesnt print "please enter the correct input" instead, it just prints 0. the else statement doesnt work

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