Question

/4 Question An area of square, drea ofa rectangle and triangle can be calculated by using the given formula: sqareaa (renww value from the functioi area is reciabgle-(retrn valwe from the function is area int) ceouatre -D-(return value fromtheneion e s double t and s s formula must be use when the values for the sides of the triangle are whether you want to calculate the area of square or a. b and c are the sides of the triangle and s is called the semi perimerer atbte)This known* Your program should ask the user rectangle or triangle before giving the suitable input. Develop suitable overloaded functions area0 to calculate the area of a square and triangle using the different formula mentioned above and return it. The functions must receive the required arguments as pass-by-value. , rectangle Construct the overloaded functions using suitable prototype and use it in your main program. nter the ide of the agsiare t ress any key to cont inue nter the length and breadth of the rectang lo The area of the rectangle ia: 18 Press any key to cont inue . ClWindowslsystem321cmd.exe nter the three sides of t he triongle The cta-ea of the trishle is: 19.6678 ress any key to continue

Answer 1

The C++ code is as follows:

#include<bits/stdc++.h>
using namespace std;
double area(double a); // function signatures with different parameter decalrations for each
double area(double a,double b);
double area(double a,double b, double c);
int main()
{
cout << "You want area of square(s) or rectangle(r) or triangle(t)?" << endl; // taking the input
char c;
cin >> c;
if(c == 's') // if the user inputted s
{
cout << "Enter the length of side of the square" << endl;
double l;
cin >> l;
double size = area(l); // calling the function
cout << "The area of the square is " << size << endl;
}
if(c == 'r') // if the user inputted r
{
cout << "Enter the two sides of the rectangle" << endl;
double l,b;
cin >> l >> b;
double size = area(l,b); // calling the function
cout << "The area of the rectangle is " << size << endl;
}
if(c == 't') // if the user inputted t
{
cout << "Enter the three sides of the triangle" << endl;
double l,b,r;
cin >> l >> b >> r;
double size = area(l,b,r); // calling the function
cout << "The area of the triangle is " << size << endl;
}
return 0;
}
double area(double a) // for the square
{
return a*a;
}
double area(double a, double b) // for the rectangle
{
return a*b;
}
double area(double a, double b, double c) // for the triangle
{
double s = 0.5*(a+b+c);
double size = sqrt(s*(s-a)*(s-b)*(s-c));
return size;
}

Output ;

You want area of square(s) or rectangle(r) or triangle(t)?
s
Enter the length of side of the square
3
The area of the square is 9

You want area of square(s) or rectangle(r) or triangle(t)?
r
Enter the two sides of the rectangle
2
3.2
The area of the rectangle is 6.4

You want area of square(s) or rectangle(r) or triangle(t)?
t
Enter the three sides of the triangle
2.1
3.2
4.3
The area of the triangle is 3.21994