C++ program to subtract two number using Function

In this tutorial, we will discuss the C++ program to subtract two numbers using the function

In this topic, we are going to learn how to subtract two numbers (integer, floating point) using the function in C++ language

already we are learned the same concept using the operator

if you want to remember click here, C++ program to subtract two numbers

subtract two number using Function

Approach

Function declaration or prototype
Variable declaration
Read value from user
function definition
call the function
display result on the screen

Code to subtract two integer number using Function

The program allows to enter two integer values then, it calculates subtraction of the given numbers

Program 1

#include <iostream>
#include <conio.h>
using namespace std;

int subNum(int a, int b);//Function prototype
int main()
{
    int result,num1,num2;
    cout<<"Enter two numbers to subtract\n";
    cin>>num1>>num2;//read input from the user

    result=subNum(num1,num2);//call the function
     cout<<"subtraction of given two numbers: "<<result;
     getch();
    return 0;
}
int subNum(int x, int y)//function definition
{
    int c=x-y;
    return (c);
}

When the above code is executed, it produces the following result

case 1

Enter two numbers to subtract
678
456
subtraction of given two numbers: 222

case 2

Enter two numbers to subtract
46
789
subtraction of given two numbers: -743

Code to subtract two floats number using Function

The program allows to enter two float values then, it calculates subtraction of the given numbers

Program 2

#include <iostream>
#include <conio.h>
using namespace std;

float subNum(float a, float b);//Function prototype
int main()
{
    float result,num1,num2;//variable declaration
    cout<<"Enter two numbers to subtract\n";
    cin>>num1>>num2;//read input from the user

    result=subNum(num1,num2);//call the function
     cout<<"subtraction of given two numbers: "<<result;
     getch();
    return 0;
}
float subNum(float x, float y)//finction definition
{
    float c=x-y;
    return (c);
}

When the above code is executed, it produces the following result

case 1

Enter two numbers to subtract
233.4
34.5
subtraction of given two numbers: 198.9

Suggetsed post

Operator in C++ language

Data type in C++ language

Variable in C++ language

C++ program to subtract two number using Function