30 Days of Code: Day 1: Data Types

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

int main() {
    int i = 4;
    double d = 4.0;
    char s[] = "HackerRank ";
        
    // Declare second integer, double, and String variables.
    int ix;
    double dx;
    char sx[100];
    char buffer[100];

    // Read and save an integer, double, and String to your variables.
    scanf("%d %lf %[^\n]", &ix, &dx, sx);

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

    // Print the sum of the double variables on a new line.
    printf("%.1f\n", d+dx);
    
    // Concatenate and print the String variables on a new line
    strcpy(buffer,s);
    printf("%s", strcat(buffer,sx));

    // The 's' variable above should be printed first.
}