Playing With Characters - Hacker Rank Solution

 Problem Statement :

Objective:

This challenge will help you to learn how to take a character, a string and a sentence as input in C.

To take a single character ch as input, you can use scanf("%c", &ch ); and printf("%c", ch) writes a character specified by the argument char to stdout

char ch;

scanf("%c", &ch);

printf("%c", ch);

This piece of code prints the character ch.

You can take a string as input in C using scanf(“%s”, s). But, it accepts string only until it finds the first space.

In order to take a line as input, you can use scanf("%[^\n]%*c", s); where s is defined as char s[MAX_LEN] where MAX_LEN is the maximum size of s. Here, [] is the scanset character. ^\n stands for taking input until a newline isn't encountered. Then, with this %*c, it reads the newline character and here, the used * indicates that this newline character is discarded.

Note: The statement: scanf("%[^\n]%*c", s); will not work because the last statement will read a newline character, \n, from the previous line. This can be handled in a variety of ways. One way is to use scanf("\n"); before the last statement.

Task:

You have to print the character, ch, in the first line. Then print s in next line. In the last line print the sentence, sen.

Input Format:

First, take a character, ch as input.

Then take the string, s as input.

Lastly, take the sentence sen as input.

Constraints:

Strings for s and sen will have fewer than 100 characters, including the newline.

Output Format:

Print three lines of output. The first line prints the character, ch.

The second line prints the string, s.

The third line prints the sentence, sen.

Solution:

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int main() 
{
    char ch,s[10],sen[100];
    scanf("%c", &ch);
    scanf("%s", &s);
    scanf(" %[^\n]%*c", &sen);
    printf("%c\n%s\n%s",ch,s,sen);
    return 0;
}