• On October 2, 2024
• By Karmehavannan
• 1 Comment
• Categories: Find elements
• Tags: C++ programs, Cpp language, operator

Cpp program for find greatest of three numbers using function

Cpp program for find greatest of three numbers using the function

In this tutorial, we will discuss the concept of Cpp program: find the greatest of three numbers using the function

In this post, we will learn how to find the greatest number among three numbers using a user-defined function in C++ programming language

In my previous post, I have explained the various approaches to find the largest number  among  three numbers in C++ language

However, in this program, we embed the logic of the program in the user defined-function.

Here, I have explained how to find the greatest number from the given three numbers and how to embed this logic in the function in C++.

Program 1

find the greatest of three numbers using nested if statements

This program allows the user to enter three numbers and compare to select the largest number using nested if statements

#include <iostream>
#include <conio.h>

using namespace std;
int findBiggest(int,int,int);//function prototype
int main()
{
    double num1, num2,num3; //declare the variables
    cout<<"Enter the first number to compare: ";
    cin>>num1;//get input from user for num1
    cout<<"Enter the second number to compare: ";
    cin>>num2;//get input from user for num2
    cout<<"Enter the third number to compare: ";
    cin>>num3;//get input from user for num3
    int result=findBiggest(num1,num2,num3);//function call
    cout<<"Biggest number is: "<<result;//display the output
   getch();
    return 0;
}
int findBiggest(int num1, int num2, int num3){//function definition
    int biggest;
    if(num1>=num2){
            if(num1>=num3){
                return num1;
            }
            else{
                return num3;
            }
    }
    else{
        if(num2>num3){
            return num2;
        }
            else{
                return num3;
            }
        }
}

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

Enter the first number to compare: 87
Enter the second number to compare: 23
Enter the third number to compare: 67
Biggest number is: 87

 

 

 

Program 2

find the greatest of three numbers using if-else-if statements

This program allows the user to enter three numbers and compare to select the largest number using if-else-if statements

#include <iostream>
#include <conio.h>

using namespace std;
int findBiggest(int,int,int);
int main()
{
    double num1, num2,num3; //declare the variables
    cout<<"Enter the first number to compare: ";
    cin>>num1;//get input from user for num1
    cout<<"Enter the second number to compare: ";
    cin>>num2;//get input from user for num2
    cout<<"Enter the third number to compare: ";
    cin>>num3;//get input from user for num3
    int result=findBiggest(num1,num2,num3);//function call
    cout<<"Biggest number is: "<<result;//Display the output
   getch();
    return 0;
}
int findBiggest(int num1, int num2, int num3){//function definition
    int biggest;
    if(num1>=num2 && num1>=num3){
         biggest=num1;
    }//num1 compare num 2 and num 3
    else if(num2>=num1 && num2>=num3){
        biggest=num2;
    }//num2 compare num1 and num3
    else{biggest=num3;
    }
    return biggest;

    }

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

Enter the first number to compare: 35
Enter the second number to compare: 89
Enter the third number to compare: 54
Biggest number is: 89

 

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