#include <stdio.h>

int main()
{
printf("Hello World! \n");

return 0;
}










#include <stdio.h> //Declaring needed libraries
#include <math.h>




int main() {

    int firstNumber = 5; //Declaring wanted integers.
    int secondNumber = 3;
    int sum = firstNumber + secondNumber; //Making arithmetic functions.
    int difference = firstNumber - secondNumber;
    int product = firstNumber * secondNumber;
    int division = firstNumber / secondNumber;
    int power;
    power = pow(firstNumber, secondNumber); //Getting power from math.h.

    printf("First number: %2d\n", firstNumber); //Printing all wanted calculations.
    printf("Second number: %1d\n", secondNumber);
    printf("Sum: %11d\n", sum);
    printf("Difference: %4d\n", difference);
    printf("Product: %8d\n", product);
    printf("Division: %6d\n", division);
    printf("Power: %11d\n", power);

    return 0;
}