C++ program to subtract two number using Function

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

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

 

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