94: ***(Syntax)*** Take length from user and print area and volume using function

 

#include <iostream>
using namespace std;

float square(float length)
{
    return length * length;
}

float cube(float length)
{
    return length * length * length;
}

int main()
{
    float length;

    cout << "Enter the length: ";
    cin >> length;

    float area=square(length), volume=cube(length);

    cout << "Area is equal to: " << area << "cm^2" << endl;
    cout << "Volume is equal to: " << volume << "cm^3";

    return 0;
}

Precaution:

You must assign value to length or take input from user before calling the function as in float area=square(length) 

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