int main() {

int year;
cout << “Enter a year: “;
cin >> year;

// leap year if perfectly divisible by 400
if (year % 400 == 0) {
cout << year << ” is a leap year.”;
}
// not a leap year if divisible by 100
// but not divisible by 400
else if (year % 100 == 0) {
cout << year << “…[Read more]

int main() {
int n;

cout << “Enter an integer: “;
cin >> n;

if ( n % 2 == 0)
cout << n << ” is even.”;
else
cout << n << ” is odd.”;

return 0;
}

int main()
{
int a = 5, b = 10, temp;

cout << “Before swapping.” << endl;
cout << “a = ” << a << “, b = ” << b << endl;

temp = a;
a = b;
b = temp;

cout << “nAfter swapping.” << endl;
cout << “a = ” << a << “, b = ” << b << endl;

return…

int main()
{
cout << “Size of char: ” << sizeof(char) << ” byte” << endl;
cout << “Size of int: ” << sizeof(int) << ” bytes” << endl;
cout << “Size of float: ” << sizeof(float) << ” bytes” << endl;
cout << “Size of double: ” << sizeof(double) << ” bytes” << endl;

return…

int main()
{
int divisor, dividend, quotient, remainder;

cout << “Enter dividend: “;
cin >> dividend;

cout << “Enter divisor: “;
cin >> divisor;

quotient = dividend / divisor;
remainder = dividend % divisor;

cout << “Quotient = ” << quotient << endl;
cout <<…[Read more]

int main() {

int first_number, second_number, sum;

cout << “Enter two integers: “;
cin >> first_number >> second_number;

// sum of two numbers in stored in variable sumOfTwoNumbers
sum = first_number + second_number;

// prints sum
cout << first_number << ” + ” << second_number << ” =…[Read more]

int main() {
int number;

cout << “Enter an integer: “;
cin >> number;

cout << “You entered ” << number;
return 0;
}

#include <iostream>

int main() {
std::cout << “Hello World!”;
return 0;
}

discriminant = b * b – 4 * a * c;

// condition for real and different roots
if (discriminant > 0) {
root1…[Read more]