Simple C++ Functions to Calculate Area of Square and Volume of Cuboid

This is the simple C++ program to calculate area and volume.

#include <iostream>
using namespace std;

int a_square(int length)
{
    return length*length;
}
int v_cuboid(int length, int height)
{
    return a_square(length)*height;
    //return length*length *height;
}


void volume_cuboid() 
{
    int length,height;
    cout<<"Enter the length of the cuboid: ";
    cin>>length;
    cout<<"Enter the height of the cuboid: ";
    cin>>height;
    cout<<"The volume of the cuboid is "<<v_cuboid(length,height);
}

void area_square()
{
    int length;
    cout<<"Enter the length of the square: ";
    cin>>length;
    cout<<"The area of th square is "<<a_square(length)<<endl;

}
int main()
{
    area_square(); //functions declared 
    volume_cuboid();
}