Use of Function Overloading without Class in C++

1)

#include<iostream.h>
#include<conio.h>
int mul(int , int);
float add(float, float);
void main()
{
    int a,b,x;
    float c,d,y;
    clrscr();

    cout<<"\n Enter Two Integers: ";
    cin>>a>>b;
    x=mul(a,b);
    cout<<"\n Multiplication of two numbers= "<<x<<endl;

    cout<<"\n Enter Two Floating Numbers: ";
    cin>>c>>d;
    y=add(c,d);
    cout<<"\n Addition of Two Numbers= "<<y<<endl;
getch();
}
int mul(int m, int d)
{
    int tot;
    tot=m*d;
    return tot;
}
float add( float m, float d)
{
    float sum;
    sum=m+d;
    return sum;
}

Here is the output :::)

 

2)

#include<iostream.h>

#include<conio.h>

long add(long , long);

int mul(int, int);

float sub(float, float);

void main()

{

    long a,b,x;

    int c,d,y;

    float e,f,z;

    clrscr();

    cout<<"\n Enter two integers: ";

    cin>>a>>b;

    x=add(a,b);

    cout<<"\n Addion of two integers = "<<x<<endl;

    cout<<"\n Enter two integers: ";

    cin>>c>>d;

    y=mul(c,d);

    cout<<"\n Multiplication of two integers = "<<y<<endl;

    cout<<"\n ENter two floating numbers: ";

    cin>>e>>f;

    z=sub(e,f);

    cout<<"\n Subtraction of two numbers = "<<z<<endl;

getch();

}

long add(long m, long d)

{

    long sum;

    sum=m+d;

    return sum;

}

int mul(int m, int d)

{

    int sum;

    sum=m*d;

    return sum;

}

float sub(float m, float d)

{

    float sum;

    sum=m-d;

    return sum;

}

Here is the output :)))