C++ Practice Exercises: Essential Techniques for Mastering the Framework

Here is a simple C++ practice to help you get started with the language:

1. Write a program that prompts the user to input two integers, and then prints the sum of these two integers.

cCopy code#include <iostream>

int main() {
  int num1, num2, sum;
  std::cout << "Enter two integers: ";
  std::cin >> num1 >> num2;
  sum = num1 + num2;
  std::cout << "The sum of " << num1 << " and " << num2 << " is " << sum << std::endl;
  return 0;
}

2. Write a program that prompts the user to input a radius of a circle, and then calculates and prints the area and circumference of the circle.

cCopy code#include <iostream>
#include <cmath>

int main() {
  double radius, area, circumference;
  const double pi = 3.14159265358979323846;
  std::cout << "Enter the radius of the circle: ";
  std::cin >> radius;
  area = pi * pow(radius, 2);
  circumference = 2 * pi * radius;
  std::cout << "The area of the circle is " << area << std::endl;
  std::cout << "The circumference of the circle is " << circumference << std::endl;
  return 0;
}

3. Write a program that generates and prints 10 random numbers between 1 and 100.

cCopy code#include <iostream>
#include <cstdlib>
#include <ctime>

int main() {
  int i;
  srand(time(0));
  for (i = 0; i < 10; i++) {
    std::cout << 1 + rand() % 100 << std::endl;
  }
  return 0;
}

These exercises should give you a good starting point for learning C++. Practice writing more programs and experimenting with the language to improve your skills. Good luck!