Java Day 1 challenge:

I succeeded but had some trouble with the string output, putting a blank '\n' in. Resovled this by using two nextLine()s with the second one reading into my string variable. Is there a better or suggested way or is one nextLine() to eat the '\n' left over from nextDouble() standard?

C# Day 2 Challenge

Its my first time here. Can someone advise why the complie woriks but addional test case fails when i submit this C# Day 2 challenge? Link: [https://www.hackerrank.com/challenges/30-data-types/problem?isFullScreen=true]

using System;
using System.Collections.Generic;
using System.IO;

class Solution {
    static void Main(String[] args) {
        int i = 4;
        double d = 4.0;
        string s = "HackerRank ";

        
        // Declare second integer, double, and String variables.
        
        // Read and save an integer, double, and String to your variables.
        
        // Print the sum of both integer variables on a new line.
        
        // Print the sum of the double variables on a new line.
        
        // Concatenate and print the String variables on a new line
        // The 's' variable above should be printed first.
        int i2 = 12;
        double d2 = 4.0;
        string s2 = "is the best place to learn and practice coding!";
        Console.WriteLine(i+i2);
        Console.WriteLine   (String.Format("{0:0.0}",d+d2));
        Console.WriteLine(String.Concat(s + s2));


    }
}

Here is my C assignment :

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

int main() {
    int i = 4;
    double d = 4.0;
    char s[] = "HackerRank ";
    int a;
    double b;
    char *c= (char*) malloc(1024*sizeof(char));
    scanf("%[^\n]%*c",c);
    a=atoi(c);
    scanf("%[^\n]%*c",c);
    b=atof(c);
    scanf("%[^\n]%*c",c);
    c= (char*) realloc(c, strlen(c)+1);
    printf("%d\n",i+a);
    printf("%-0.1f\n",d+b);
    printf("%s%s",s,c);
    return 0;
}

For C users. I had some head banging up the wall because of differencies how scanf worked in my WSL environment and a given here environment. Here is a program that worked in my WSL window: // Declare second integer, double, and String variables. int my_integer = 0; double my_duoble = 0.0; char *my_string; char final_string; my_string = (char)malloc(100 * sizeof(char)); final_string = (char*) malloc(200 * sizeof(char)); if(my_string == NULL || final_string == NULL) { printf("Memory allocation failed."); return 1; }

// Read and save an integer, double, and String to your variables.
scanf("%d", &my_integer);
scanf("%lf", &my_duoble);   
scanf("%[^\n]s", my_string);

// Print the sum of both integer variables on a new line.
printf("%d\n", i + my_integer);

// Print the sum of the double variables on a new line.
printf("%.1lf\n", d + my_duoble);

// Concatenate and print the String variables on a new line
// The 's' variable above should be printed first.
strcpy(final_string, s);
strcat(final_string, my_string);
printf("%s\n", final_string);
free(my_string);
free(final_string);

However, in the given environment nothing would be put into my_string. The remedy was to clean out a buffer from the previous input: <...>
// Read and save an integer, double, and String to your variables. scanf("%d", &my_integer); scanf("%lf", &my_duoble);

int leftover = 0;
while ((leftover = getchar()) != '\n' && leftover != EOF);

scanf("%[^\n]s", my_string);
// Print the sum of both integer variables on a new line.
printf("%d\n", i + my_integer);

    Then my program worked. But adding a buffer cleaning code in my program in WLS, caused it crash.

Just wondering why that may be.... <...>

Then my program worked. But adding a buffer cleaning code in my program in WLS, caused it crash. Just wondering why that may be....

For java: import java.io.; import java.util.; import java.text.; import java.math.; import java.util.regex.*;

public class Solution {

public static void main(String[] args) {
    int i = 4;
    double d = 4.0;
    String s = "HackerRank ";

    Scanner scan = new Scanner(System.in);

    /* Declare second integer, double, and String variables. */
    int j = scan.nextInt();
    double e = scan.nextDouble();
    scan.nextLine();
    String k = scan.nextLine();
    String o = s+k;

    /* Read and save an integer, double, and String to your variables.*/
    // Note: If you have trouble reading the entire String, please go back and review the Tutorial closely.

    /* Print the sum of both integer variables on a new line. */
    System.out.println(i+j);

    /* Print the sum of the double variables on a new line. */
    System.out.println(d+e);
    /* Concatenate and print the String variables on a new line; 
        the 's' variable above should be printed first. */
    System.out.println(o);
    scan.close();
}

}