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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
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Nested if statement in C++ language
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