C++ program to Find Largest of three numbers

C++ program to Find Largest of three numbers

In this article, we will discuss the concept of C++ program to Find Largest of three numbers

In this post, we are going to learn how to write a program to find largest number out of three numbers using different methods in C++ program.

Code to find largest numbers

Code to find largest numbers  using if statements

In this code, we will find largest number out of three numbers using if statements in C++ language

Program 1

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

using namespace std;
int main()
{
int num1,num2,num3; //declare the variables
    cout<<"Please Enter three numbers for check largest: ";
    //Ask input from the user
   cin>>num1>>num2>>num3;//Reading input from user for num1, num2, num3


   if(num1>=num2 && num1>=num3){
   cout<<"Largest number is: "<<num1;
  //Checking the num1 is largest
}
if(num2>=num1 && num2>=num3){
    cout<<"Largest number is: "<<num2;
  //Checking the num2 is largest
}
if(num3>=num1 && num3>=num2){
    cout<<"Largest number is: "<<num3;
  //Checking the num3 is largest
}
   getch();
    return 0;
}

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

Please Enter three numbers for check largest: 76
564
45
Largest number is: 564

 

Code to find largest numbers  using if else if statements

In this code, we will find largest number out of three numbers using if else if statements in C++ language

Program 2

#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
    int num1,num2,num3; //declare the variables
    cout<<"Enter three numbers to find large: ";
    //Ask input from the user
    cin>>num1>>num2>>num3;
    //Reading input from user for num1, num2,num3

    if(num1>=num2 && num1>=num3){
         cout<<"\nLargest number is: "<<num1;
    }//num1 compare num 2 and num 3
    else if(num2>=num1 && num2>=num3){
         cout<<"\nLargest number is: "<<num2;
    }//num2 compare num1 and num3
    else{
         cout<<"\nLargest number is: "<<num3;
    }

   getch();
    return 0;
}

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

Enter three numbers to find large: 789
146
1030
Largest number is 1030

 

Code to find largest numbers  using Nested if statements

In this code, we will find largest number out of three numbers using Nested if statements in C++ language

Program 3

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

using namespace std;
int main()
{
int num1,num2,num3; //declare the variables
    cout<<"Please Enter three numbers: ";
    //Ask input from the user
   cin>>num1>>num2>>num3;
//Reading input from user for num1, num2,num3


    if(num1>=num2){//checking num1 and num2
            if(num1>=num3){//checking num1 and num3
         cout<<"\nLargest number is:"<<num1;
            }
            else{
                 cout<<"\nLargest number is:"<<num2;
            }
    }
    else{
        if(num2>=num3){//checking num2 and num1
             cout<<"\nLargest number is:"<<num2;
        }
        else{
             cout<<"\nLargest number is:"<<num3;
        }

    }
   getch();
    return 0;
}

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

Please Enter three numbers: 7500
2500
4000
Largest number is :7500

 

Code to find largest numbers  using function

In this code, we will find largest number out of three numbers using function in C++ language

Program 4

#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 three numbers to find large: ";
    cin>>num1>>num2>>num3;//Reading input from user for num1, num2,num3
    int result=findBiggest(num1,num2,num3);//Calling the method
    cout<<"Biggest number is: "<<result;//Display result on the screen
   getch();
    return 0;
}
int findBiggest(int num1, int num2, int num3){//method 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 result

Enter three numbers to find large: 100
50
25
Biggest number is 100

 

Code to find largest numbers  using ternary operator

In this code, we will find largest number out of three numbers using ternary operator in C++ language

Program 5

#include <iostream>
#include <conio.h>
using namespace std;
int main()
{

    int num1,num2,num3; //declare the variables
    cout<<"Please Enter three numbers: ";
    //Ask input from the user
   cin>>num1>>num2>>num3;
    //Reading the input from user and store the variables

int result=num3>(num1>num2?num1:num2)?num3:((num1>num2)? num1:num2);
//find largest using ternary operator
cout<<"Largest number is: "<<result;
//Display result on the screen
getch();
    return 0;
}

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

Please Enter three numbers: 12
76
45
Largest number is: 76

 

Program 6

#include <iostream>
#include <conio.h>
using namespace std;
int main()
{

    int num1,num2,num3; //declare the variables
    cout<<"Please Enter three numbers: ";
    //Ask input from the user
   cin>>num1>>num2>>num3;
    //Reading the input from user and store the variables

int temp=(num1>num2)? num1:num2;
//Compare num1 and num2 using ternary operator
int largest= num3>temp?num3:temp;
//Compare num3 and temp variable using ternary operator
//find largest using ternary operator
cout<<"Largest number is: "<<largest;
//Display result on the screen
getch();
    return 0;
}

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

Please Enter three numbers: 125
345
575
Largest number is: 575

 

Code to find largest numbers  using array

In this code, we will find largest number out of three numbers using array in C++ language

Program 7

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

int main()
{
    int arr[10], size,i;
    cout<<"Enter the number of elements in an array\n";
    cin>>size;
    cout<<"Enter "<<size<< " integers \n";

    for(i=0; i<size; i++){
   cout<<"Enter the elements "<<(i+1)<<": ";
   cin>>arr[i];//takes input from user for array
   }
int max=arr[0];
   for(i=0; i<size; i++){
     if(max<arr[i]){
     max=arr[i];
   }
   }
   cout<<"\nThe largest value is:"<<max;
   getch();
    return 0;
}

 

Enter the number of elements in an array
3
Enter 3 integers
Enter the element 1: 1250
Enter the element 1: 3000
Enter the element 1: 2500

The largest value is : 3000

 

Suggested post

Operator in C++ language

if statements in C++ language

Nested if statement in C++ language

Array in C++ language

 

Similar post

Java code to find middle number of three

C code to find middle number of three

C++ code to find middle number of three

Python code to find middle number of three

 

Java program to Find largest of three numbers

C program to Find largest of three numbers

C++ program to Find largest of three numbers

Python program to Find largest of three numbers