- C++ Programming Examples
- C++ Programming Examples
- C++: Hello World
- C++: Get Input
- C++: Print Integer
- C++: Add two numbers
- C++: Add, Sub, Multiply, Div
- C++: Add Digits
- C++: Find Average and Percentage
- C++: Find Arithmetic Mean
- C++: Sum of n Natural Numbers
- C++: Sum of n Numbers
- C++: Square's Area and Perimeter
- C++: Rectangle's Area and Perimeter
- C++: Triangle's Area and Perimeter
- C++: Area and Circumference
- C++: Find Simple Interest
- C++: Fahrenheit to Celsius
- C++: Celsius to Fahrenheit
- C++: Print Prime Numbers
- C++: Reverse a Number
- C++: Swap Two Numbers
- C++: Print Multiplication Table
- C++: Find Factorial of a Number
- C++: Find Factors of a Number
- C++: Find HCF and LCM
- C++: Create a Calculator
- C++: Count Digits in a Number
- C++: First and Last Digit Sum
- C++: Product of Number Digits
- C++: Sum of Squares of Digits
- C++: Interchange Digits of Number
- C++ if-else Programs
- C++: Check Even or Odd
- C++: Check Prime or Not
- C++: Check Alphabet or Not
- C++: Check Vowel or Not
- C++: Check Leap Year or Not
- C++: Check Reverse equals Original
- C++: Check Perfect Number
- C++: Check Palindrome or Not
- C++: Check Armstrong or Not
- C++: Divisibility Test
- C++: Find Labor Wage
- C++: Find Discounted Price
- C++: Find Shipping Charge
- C++: Find Telephone Bills
- C++: Calculate Student Grade
- C++: Largest of Two Numbers
- C++: Largest of Three Numbers
- C++ Number Conversion
- C++: Decimal to Binary
- C++: Decimal to Octal
- C++: Decimal to Hexadecimal
- C++: Binary to Decimal
- C++: Binary to Octal
- C++: Binary to Hexadecimal
- C++: Octal to Decimal
- C++: Octal to Binary
- C++: Octal to Hexadecimal
- C++: Hexadecimal to Decimal
- C++: Hexadecimal to Binary
- C++: Hexadecimal to Octal
- C++ Pattern Programs
- C++: Pattern Programs
- C++: Print Diamond Pattern
- C++: Print Floyd's Triangle
- C++: Print Pascal's Triangle
- C++ Array Programs
- C++: 1D Array Program
- C++: Linear Search
- C++: Binary Search
- C++: Largest Element in an Array
- C++: Smallest Element in an Array
- C++: Find Second Largest Element
- C++: Find Second Smallest Element
- C++: Sum of All Elements
- C++: Multiply All Elements
- C++: Element in Even Position
- C++: Element in Odd Position
- C++: Print Even Numbers in Array
- C++: Print Odd Numbers in Array
- C++: Count Even or Odd Numbers
- C++: Sum of Even or Odd Numbers
- C++: Count Positive, Negative, Zero
- C++: Reverse an Array
- C++: Insert an Element
- C++: Delete an Element
- C++: Merge two Arrays
- C++: Bubble Sort
- C++: Selection Sort
- C++: Insertion Sort
- C++: Common Elements
- C++: 2D Array Programs
- C++: Add Two Matrices
- C++: Subtract Two Matrices
- C++: Transpose Matrix
- C++: Multiply Two Matrices
- C++: 3D Array Programs
- C++ String Programs
- C++: Print String
- C++: Find String Length
- C++: Compare Two Strings
- C++: Copy String
- C++: String Concatenation
- C++: Reverse a String
- C++: Delete Vowels from a String
- C++: Delete a Word from a String
- C++: Count Characters in a String
- C++: Count Words in a String
- C++: Frequency of Words
- C++: Remove Spaces from Strings
- C++: Sort a String
- C++: Uppercase to Lowercase
- C++: Lowercase to Uppercase
- C++: Swap Two Strings
- C++: Check the Anagram or Not
- C++: Capitalize All Words in a String
- C++: Get Numbers from a String
- C++ File Programs
- C++: Read a File
- C++: Write Content to a File
- C++: Append Data to a File
- C++: Read and Display File
- C++: Copy a File
- C++: Merge Two Files
- Count Characters in a File
- C++: Capitalize Every Word
- C++: List Files in Directory
- C++: Delete a File
- C++: Encrypt and Decrypt a File
- C++ Misc Programs
- C++: Print ASCII Value
- C++: Add Binary Numbers
- C++: Generate Random Numbers
- C++: Print a Smiling Face
- C++: Days into Years and Months
- C++: Add Two Numbers using Pointer
- C++: Print Fibonacci Series
- C++: Generate Armstrong Numbers
- C++: Find nCr and nPr
- C++: Get IP Address
- C++: Print Date and Time
- C++: Shutdown and Restart Computer
- C++ Programming Tutorial
- C++ Tutorial
C++ Program to Find the Largest of Two Numbers
In this article, you will learn and get code to find and print the largest of two numbers given by the user at run-time in C++. Here is the list of approaches used to create the program:
- Find the largest of two numbers using if-else
- Using the conditional operator, find the larger of two numbers
- Find the largest of two numbers using a user-defined function
- Using class and object, find the larger of two numbers
In C++, use if-else to find the larger of two numbers
To find the largest between two numbers in C++ programming, you have to ask the user to enter any two numbers. Now use the if-else statement to find the largest. and then print the largest as shown in the program given below.
The question is, "Write a program in C++ to find the largest or greatest of two numbers." Here is its answer:
#include<iostream> using namespace std; int main() { int numOne, numTwo, larg; cout<<"Enter the Two Numbers: "; cin>>numOne>>numTwo; if(numOne>numTwo) larg = numOne; else larg = numTwo; cout<<"\nLargest = "<<larg; cout<<endl; return 0; }
This program was built and runs under the Code::Blocks IDE. Here is its sample run:
Now supply any two numbers, say 5 and 6. Press the ENTER key to find and print the largest one, as shown in the snapshot given below:
Here's another sample run with user input, this time with 6 (as the first number) and 5 (as the second number):
In the above program, using if-else, we've compared the value of numOne (the first number) with numTwo (the second number). That is, if numOne's value is greater than numTwo's, then the value of numOne gets initialized to larg. Otherwise, the value of numTwo is set to larg.
When the user enters the two numbers, say 5 and 6, in the same order, logic dictates that 5 as the first number and 6 as the second. Then 5 gets stored in numOne, and 6 gets stored in numTwo.
The condition of the if gets evaluated. That is, the condition numOne>numTwo or 5>6 evaluates to be false, therefore the program flow does not go inside the if's body. It instead goes to the else's body. And the value of numTwo (6) gets initialized to larg.
Finally, just print the value of larg on the output, that will be the largest number on your screen.
In C++, use the conditional operator to find the greater of two numbers
Another C++ program that finds and prints the largest number between two given numbers, but this time using the conditional operator (?:).
#include<iostream> using namespace std; int main() { int numOne, numTwo, larg; cout<<"Enter the Two Numbers: "; cin>>numOne>>numTwo; larg = (numOne>numTwo) ? numOne : numTwo; cout<<"\nLargest = "<<larg; cout<<endl; return 0; }
This program produces the same output as the previous program. In this program, the following code is used:
(numOne>numTwo) ? numOne : numTwo
states that if the value of numOne is greater than the value of numTwo, then the whole expression becomes numOne. Otherwise, the entire expression is numTwo.
That is, if the condition evaluates to true, the value of numOne is initialized to larg. Otherwise, the value of numTwo is set to larg.
Using a C++ function, find the larger of two numbers
Let's create another C++ program using a user-defined function, largeOfTwo(), to find the largest of two numbers.
The function largeOfTwo() takes two numbers as arguments and returns the larger of the two.
#include<iostream> using namespace std; int largeOfTwo(int, int); int main() { int numOne, numTwo, larg; cout<<"Enter the Two Numbers: "; cin>>numOne>>numTwo; larg = largeOfTwo(numOne, numTwo); cout<<"\nLargest = "<<larg; cout<<endl; return 0; } int largeOfTwo(int nOne, int nTwo) { if(nOne>nTwo) return nOne; else return nTwo; }
In C++, find the greater of two numbers using classes and objects
This is the last program in this article that does the same job as previous programs. The only difference is that this program employs C++'s class and object features to determine and display the largest or greatest of two numbers entered by the user.
#include<iostream> using namespace std; class fresherearth { public: int findLargest(int, int); }; int fresherearth::findLargest(int a, int b) { if(a>b) return a; else return b; } int main() { fresherearth c; int numOne, numTwo, larg; cout<<"Enter the Two Numbers: "; cin>>numOne>>numTwo; larg = c.findLargest(numOne, numTwo); cout<<"\nLargest = "<<larg; cout<<endl; return 0; }
An object c of type fresherearthis created within the main() function. And using this object, we've called the function findLargest() of the class fresherearth.
The same program in different languages
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