- C Programming Examples
- C Programming Examples
- C Print Hello World
- C Get Input from User
- C Print Integer
- C Add Two Numbers
- C Add Subtract Multiply Divide
- C Add n Numbers
- C Area Perimeter of Square
- C Area Perimeter of Rectangle
- C Area Circum of Circle
- C Fahrenheit to Celsius
- C Celsius to Fahrenheit
- C Inches to Centimeters
- C Kilogram to Gram
- C Reverse a Number
- C Swap Two Numbers
- C Interchange Numbers
- C Print ASCII Value
- C Print Fibonacci Series
- C Check Palindrome or Not
- C Check Armstrong or Not
- C Find Armstrong Numbers
- C Find nCr and nPr
- C Find Profit Loss
- C Sum of their Square
- C First & Last Digit Sum
- C Sum of All Digit
- C Product of All Digit
- C Print Total Digit in Number
- C Check Perfect Number
- C Find Basic Gross Salary
- C Round Number to Integer
- C Print Series upto n Term
- C Find Factors of Number
- C if-else & Loop 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 Is Reverse Equal Original
- C Make Calculator
- C Add Digits of Number
- Count Positive Negative Zero
- C Largest of Two Numbers
- C Largest of Three Numbers
- C Smallest of Two Numbers
- C Smallest of Three Numbers
- C Find Factorial of Number
- C Find LCM & HCF
- C Find LCM of n Numbers
- C Find HCF of n Numbers
- C Find Arithmetic Mean
- C Find Average, Percentage
- C Find Student Grade
- C Print Table of Number
- C Print Prime Numbers
- C Find Discount Purchase
- C Calculate Parcel Charge
- C Calculate Wage of Labor
- C Print Phone Bill
- C Conversion programs
- 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 Printing Programs
- C Print Diamond Pattern
- C Print Floyd's Triangle
- C Print Pascal's Triangle
- C Array Programs
- C 1D Array Programs
- C Linear Search
- C Binary Search
- C Largest Element in Array
- C Smallest Element in Array
- C Second Largest/Smallest
- C Count Even Odd
- C Array Element at Even
- C Array Element at Odd
- C Print Even Array Elements
- C Print Odd Array Elements
- C Sum/Product of Even/Odd
- 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 Print Common Elements
- C 2D Array Programs
- C Add Two Matrices
- C Subtract Two Matrices
- C Transpose a Matrix
- C Multiply Two Matrices
- C Sum All Matrix Elements
- C Largest Element in Matrix
- C Print Row Column Total
- C 3D Array Programs
- C String Programs
- C Print String
- C Find Length of String
- C Compare Two String
- C Copy a String
- C Concatenate String
- C Reverse a String
- C Count Vowels Consonants
- C Replace Vowel in String
- C Delete Vowels from String
- C Delete Word from String
- C Frequency of Character
- C Count Word in String
- C Remove Spaces from String
- C Sort a String
- C Sort String in Alphabetical
- C Sort Words in Ascending
- C Sort Words in Descending
- C Uppercase to Lowercase
- C Lowercase to Uppercase
- C Swap Two Strings
- C Check Anagram or Not
- C Check Palindrome String
- C Print Number in Words
- C Print Successive Character
- C Character without Space
- C Remove Extra Spaces
- C File Programs
- C Read a File
- C Write Content to File
- C Read & Display File
- C Copy a File
- C Merge Two Files
- C Reverse File
- C Count All Character in File
- C List Files in Directory
- C Encrypt & Decrypt a File
- C Delete a File
- C Misc Programs
- Generate Random Numbers
- C Print Date Time
- C Print Message with Time
- C Get IP Address
- C Print Smiling face
- C Pass Array to Function
- Add Two Numbers using Pointer
- C Address of Variable
- C Shutdown Computer
- C Programming Tutorial
- C Tutorial
- C Programming Library
- C Standard Library
- 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 on printing Hello World in C programming. Hello World program is given here in following ways:
- Print Hello World using semicolon
- without using semicolon
- 10 times using for loop
- 10 times using while loop
- using string
- using user-defined function
Print Hello, World in C
This program simply prints Hello, World using printf() function. This function is defined in stdio.h header file.
#include<stdio.h> #include<conio.h> int main() { printf("Hello, World"); getch(); 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 using semicolon (,), just put Hello World instead of Hello, World inside the printf() function as given in previous program. Rest of the things are same.
Print Hello World 10 Times using for Loop
Now let's create another program that uses for loop to execute the statement given below, 10 times:
printf("Hello World\n");
as shown in the program given below:
#include<stdio.h> #include<conio.h> int main() { int i; for(i=0; i<10; i++) printf("Hello World\n"); getch(); return 0; }
Here is its sample run:
The loop works in a way that:
- Initially (at very first run of for loop), 0 gets initialized to i and checks whether it is less than 10 or not
- The condition evaluates to be true, therefore program flow goes inside the loop and executes the statement
printf("Hello World");
that prints Hello World - Now program flow goes to loop update part. There increments the value of i and again compares or checks the condition.
- After every updated value of i, program checks whether it is less than 10 or not
- If condition satisfies or evaluates to be true, then only program flow goes inside the loop. Otherwise program flow exits from the loop
- In this way, the Hello World gets printed on output screen 10 number of times
Print Hello World 10 Times using while Loop
Now instead of using for loop, this program uses while loop to do the same job as of previous program. To learn more about it (while loop), you can refer to its separate tutorial.
#include<stdio.h> #include<conio.h> int main() { int i=0; while(i<10) { printf("Hello World\n"); i++; } getch(); return 0; }
Produces the same output as of previous program.
Print Hello World using String
This program uses string to print Hello World. That is, a variable say str of type char gets declared and initialized with Hello World. And prints the value of str as output using %s format specifier.
#include<stdio.h> #include<conio.h> int main() { char str[20] = "Hello World"; printf("%s", str); getch(); return 0; }
Prints Hello World on output.
Print Hello World using Function
This is the last Hello World program which is created using a user-defined function printHello() that are being called from main() function. That is, we have declared the function before main() and defined it after main(). Now we are free to call it from main(). When it gets called, then its definition part gets executed, that prints Hello World on output.
#include<stdio.h> #include<conio.h> void printHello(void); int main() { printHello(); getch(); return 0; } void printHello(void) { printf("Hello World"); }
also prints Hello World on output.
Same Program in Other Languages
- C++ Program to Print Hello World
- Java Program to Print Hello World
- Python Program to Print Hello World
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