3/22/2017

Day 0 Hello World. Solution in C | 30 Days of Code {Updated}

Get a Day 0 Hello World. Solution in C Programming Language in just single click. We are going to solve the day 0 to day 30 total 30 days fo programming problems day by days in C Language. This is the first programming problem of 30 days of code of hackerrank website. Hello, world is the first program ever written in any programming language.

Day 0 Hello World. Solution in C Language 

Hackerrank Day 0 Hello World. Solution in C


Day 0 Hello World Problem Logic:- This is a very simple program in any programming language or we can say that this is a first program that we execute the first time in the learning time of any language like C Programming language, C++ Programming language, Java language and Python language.

So basically in this program, we have to print a string Hello, World. Here we will choose C++ Domain for coding and find all solution of 30 Days Challenges Series. So in C++ " cout<< " is used for print anything in the terminal so we will put the string "Hello, World." in double-quotes, Below is an explanation of program step by step.

Code Explain Day 0 Hello World. Solution in C


string input_string;

input_string is a variable which stores the string " Hello, World. " in string format. We know that we can store string or character also, there is no limitation. A string may contain many characters there is no limitation.

getline(cin, input_string)

getline is used to store multiple strings with included space and next-line. getline reads line by line and store the string in the variable and cin is used for storing anything in C++.

cout << "Hello, World." << endl;

as I already mention that cout is stream output and printf(" ") in C is a function. So for printing any string and number we just put the string between double-quotes.

Below is the solution of hackerrank 30 challenges series or day 0 hello world. The solution in c in hackerrank. You can copy the below code and paste it into hackerrank editor or you can copy the full code and paste into hackerrank editor. You can directly click below link and it will redirect to problem page you have to just log in and run and test the code.

Updated Solutions: Day 0 Hello World Solution in C, C++, and Java Programming Language


Visit the Official Hackerrank website to submit Day 0 Hello World solution in all three languages:- Click Here

Day 0 Hello World. in C Language


#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
int main() 
{
    /* Declare a variable named 'input_string' to hold our input.*/
    char input_string[105]; 
    
    /* Read a full line of input from stdin and save it to our variable, input_string.*/
    scanf("%[^\n]", input_string); 
    
    /* Print a string literal saying "Hello, World." to stdout using printf.*/
    printf("Hello, World.\n");
    
    /* TO DO: Write a line of code here that prints the contents of input_string to stdout.*/
    
 /* Solution starts from here */
 
 printf("%s",input_string);
 
    /* Solution ends here */
 return 0;
}

The Output of Day 0 Hello World Solution in C

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Hi, I’m Ghanendra Yadav, SEO Expert, Professional Blogger, Programmer, and UI Developer. Get a Solution of More Than 500+ Programming Problems, and Practice All Programs in C, C++, and Java Languages. Get a Competitive Website Solution also Ie. Hackerrank Solutions and Geeksforgeeks Solutions. If You Are Interested to Learn a C Programming Language and You Don't Have Experience in Any Programming, You Should Start with a C Programming Language, Read: List of Format Specifiers in C.
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