- C++ Programming Examples
- C++ Programming Examples
- C++ Hello World
- C++ Get Input
- 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
- C++ Area Perimeter of Triangle
- 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
- 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
- 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
- C++ Multiply Two Matrices
- 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
- C++ Get IP Address
- C++ Print Date/Time
- C++ Shutdown, Restart Computer
- C++ Programming Tutorial
- C++ Tutorial
- C++ Programming Test
- C++ Programming Test
- Give Online Test
- All Test List
C++ Program to Print Hello World
In this article, you will learn and get code to print Hello, World! in many ways using C++ program. Here are the list of programs on printing Hello, World:
- Print Hello, World!
- Without using Semicolon
- Print Hello, World! 10 times using for loop
- Using while loop
- Print Hello, World! using Function
- using Class and Object
Print Hello World
To print Hello, World! in C++ programming, just place Hello, World! inside inverted comma ("") after cout<< as shown in the program given below:
The question is, write a program in C++ to print Hello, World!. Here is its answer:
#include<iostream> using namespace std; int main() { cout<<"Hello, World!"; cout<<endl; return 0; }
This program was build and run under Code::Blocks IDE. Here is its sample output:
Print Hello World without using Semicolon
To print Hello World, without semicolon. The only thing to do is, remove semicolon after Hello as shown in this program:
#include<iostream> using namespace std; int main() { cout<<"Hello World"; cout<<endl; return 0; }
This program produces the output as shown in the snapshot given below:
Print Hello World 10 Times using for Loop
This program prints Hello, World! 10 times using for loop
#include<iostream> using namespace std; int main() { int i; for(i=0; i<10; i++) cout<<"Hello, World!\n"; cout<<endl; return 0; }
This program produces Hello, World! 10 times as shown in the following sample output:
The dry run of above program goes like:
- Initially, 0 gets initialized to i and the condition i<10 gets evaluated. The first (initialization) statement of for loop executes at first but only at once
- That is, the condition, i<10 or 0<10 evaluates to be true, therefore program flow goes inside the loop and a string, Hello, World! gets printed
- After printing the Hello, World!, using \n, next thing to start from next line. Therefore, next printing of Hello, World! starts from new line
- Now program flow goes to the update (third statement) part of for loop and increments the value of i. So i=1
- Now the condition, i<10 or 1<10 again evaluates to be true, therefore program flow again
goes inside the loop and executes the following statement again:
cout<<"Hello, World!\n";
that prints a Hello, World! and breaks the line - This process continues until the condition of for loop evaluates to be false. That is, when the value of i becomes equal to 10, so the condition i<10 or 10<10 evaluates to be false, therefore the execution of for loop gets ended
- In this way, 10 times, Hello, World! gets printed on output
Print Hello World 10 Times using while Loop
This program does the same job as of previous program. The only difference is, this program uses while loop. The while loop only has one statement, that is the condition. Therefore we have to initialized 0 to i before the execution of while loop. And the update part included inside its body.
#include<iostream> using namespace std; int main() { int i=0; while(i<10) { cout<<"Hello, World!\n"; i++; } cout<<endl; return 0; }
This program produces the same output as of previous program. You can replace the following block of code:
while(i<10) { cout<<"Hello, World!\n"; i++; }
with
while((i++)<10) cout<<"Hello, World!\n";
Print Hello World using Function
This program prints Hello, World! using a user-defined function named printHello().
#include<iostream> using namespace std; void printHello(); int main() { printHello(); cout<<endl; return 0; } void printHello() { cout<<"Hello, World!"; }
Produces the same output as of very first program in this article.
Print Hello World using Class and Object
This is the last program on the topic. This program is created using class and object, an object-oriented feature of C++.
#include<iostream> using namespace std; class CodesCracker { public: void printHello(); }; void CodesCracker::printHello() { cout<<"Hello, World!"; } int main() { CodesCracker c; c.printHello(); cout<<endl; return 0; }
This program also produces the same output as of very first program in this article.
In above program, an object c is created of type CodesCracker inside the main() function. Now using this object, we've called the member function of the class CodesCracker, named printHello(), that prints Hello, World! in similar way as done in previous program, using function.
Same Program in Other Languages
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