- C++ Programming Examples
- C++ Programming Examples
- C++ Hello World
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- C++ Print Integer
- C++ Add Two Numbers
- C++ Add Sub Mul Div
- C++ Add Digits
- C++ Find Average Perc
- C++ Find Arithmetic Mean
- C++ Sum of n Natural Numbers
- C++ Sum of n Numbers
- C++ Area Perimeter of Square
- C++ Area Perimeter of Rectangle
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- C++ Area Circum of Circle
- 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 Number
- C++ Find Factors of Number
- C++ Find HCF & LCM
- C++ Make Calculator
- C++ Count Digits in Number
- C++ Sum of First & Last Digit
- C++ Product of Digits of Number
- 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
- Check Reverse equal Original
- C++ Check Perfect Number
- C++ Check Palindrome or Not
- C++ Check Armstrong or Not
- C++ Divisibility Test
- C++ Find Wage of Labor
- 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
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- C++ Pattern Programs
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- C++ Print Diamond Pattern
- C++ Print Floyd's Triangle
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- C++ Array Programs
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- C++ Linear Search
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- Find Largest Element in Array
- Find Smallest Element in Array
- Find Second Largest Element
- Find Second Smallest Element
- C++ Sum of All Elements
- C++ Multiply All Elements
- C++ Element on Even Position
- C++ Element on Odd Position
- C++ Print Even Numbers in Array
- C++ Print Odd Numbers in Array
- C++ Count Even/Odd Numbers
- C++ Sum of Even/Odd Numbers
- C++ Count Positive Negative Zero
- C++ Reverse an Array
- C++ Insert Element in Array
- C++ Delete Element from Array
- 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
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- C++ 3D Array Programs
- C++ String Programs
- C++ Print String
- C++ Find Length of String
- C++ Compare Two Strings
- C++ Copy String
- C++ Concatenate String
- C++ Reverse a String
- C++ Delete Vowels from String
- C++ Delete Word from String
- C++ Count Character in String
- C++ Count Word in String
- C++ Frequency of Word
- C++ Remove Spaces from String
- C++ Sort a String
- C++ Uppercase to Lowercase
- C++ Lowercase to Uppercase
- C++ Swap Two Strings
- C++ Check Anagram or Not
- C++ Capitalize All Words in String
- C++ Capitalize Specific Character
- C++ Get Numbers from String
- C++ File Programs
- C++ Read a File
- C++ Write Content to File
- C++ Append Data in File
- C++ Read & Display File
- C++ Copy a File
- C++ Merge Two Files
- Count Characters, Words in File
- C++ Capitalize All Words in File
- C++ List Files in Directory
- C++ Delete a File
- C++ Encrypt & Decrypt a File
- C++ Misc Programs
- C++ Print ASCII Value
- C++ Add Binary Numbers
- C++ Generate Random Numbers
- C++ Print Smiling Face
- C++ Days into Years, Months
- Add Two Numbers using Pointer
- C++ Print Fibonacci Series
- Generate Armstrong Numbers
- C++ Find nCr and nPr
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C++ Program to Find Largest of Two Numbers
In this article, you will learn and get code to find and print largest of given two numbers by user at run-time in C++. Here are the list of approaches used to create the program:
- Find largest of two numbers using if-else
- using conditional operator
- using user-defined function
- using class and object
Find Largest of Two Numbers using if-else
To find the largest between two numbers in C++ programming, you have to ask from user to enter any two numbers. Now use 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 largest/gretest 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 build and run under Code::Blocks IDE. Here is its sample run:
Now supply any two numbers say 5 and 6. Press ENTER
key to find and print the largest one
as shown in the snapshot given below:
Here is another sample run with user input, 6 (as first) and 5 (as second number):
In above program, using if-else, we've compared the value of numOne (first number) with numTwo (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 gets initialized to larg
Logically, when user enters the two number say 5 and 6 in same order. That is, 5 as first and 6 as second number. Then 5 gets stored in numOne and 6 gets stored in numTwo
Now the condition of if gets evaluated. That is, the condition, numOne>numTwo or 5>6 evaluates to be false, therefore program flow does not goes inside if's body. Rather it goes to its else's part. And the value of numTwo (6) gets initialized to larg
Finally just print the value of larg on output, that will be the largest number on your screen.
Find Largest of Two Numbers using Conditional Operator
Here is another C++ program that also find and prints the largest between given two numbers, but using 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 of previous program. In this program, the following code:
(numOne>numTwo) ? numOne : numTwo
states that, if the value of numOne is greater than the value of numTwo, then whole expression becomes numOne. Otherwise whole expression becomes numTwo.
That is, if the condition, numOne>numTwo, of conditional operator (?:) evaluates to be true, then the value of numOne gets initialized to larg. Otherwise the value of numTwo gets initialized to larg
Find Largest of Two Numbers using Function
Let's create another C++ program using a user-defined function, largeOfTwo() to find largest of two numbers.
The function, largeOfTwo() takes two numbers as its argument, and returns the largest from its both arguments.
#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; }
Find Largest of Two Numbers using Class and Object
This is the last program of this article, that does the same job as of previous programs. The only difference is, this program uses class and object feature of C++ to find and print largest or greatest of two entered numbers by user.
#include<iostream> using namespace std; class CodesCracker { public: int findLargest(int, int); }; int CodesCracker::findLargest(int a, int b) { if(a>b) return a; else return b; } int main() { CodesCracker 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; }
Inside the main() function, an object c of type CodesCracker is created. And using this object, we've called the function findLargest() of the class CodesCracker.
Same Program in Other Languages
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