Coding Exercises for Beginners with Solutions (C++)

Practicing coding exercises is one of the best ways to learn C++ programming. It helps improve problem-solving skills and strengthens your understanding of programming concepts.

In this tutorial, you will find beginner-friendly coding exercises along with solutions and explanations.

1. Print Hello World

Write a program to print 'Hello World'.

              
            
C++

          Solution
        
#include <iostream>
using namespace std;

int main() {
    cout << "Hello World";
    return 0;
}

2. Add Two Numbers

Write a program to add two numbers.

              
            
C++

          Solution
        
#include <iostream>
using namespace std;

int main() {
    int a = 5, b = 10;
    cout << a + b;
    return 0;
}

3. Check Even or Odd

Write a program to check whether a number is even or odd.

              
            
C++

          Solution
        
#include <iostream>
using namespace std;

int main() {
    int num = 4;
    if(num % 2 == 0)
        cout << "Even";
    else
        cout << "Odd";
    return 0;
}

4. Find Largest Number

Write a program to find the largest of two numbers.

              
            
C++

          Solution
        
#include <iostream>
using namespace std;

int main() {
    int a = 10, b = 20;
    if(a > b)
        cout << a;
    else
        cout << b;
    return 0;
}

5. Swap Two Numbers

Write a program to swap two numbers.

              
            
C++

          Solution
        
#include <iostream>
using namespace std;

int main() {
    int a = 5, b = 10, temp;
    temp = a;
    a = b;
    b = temp;
    cout << a << " " << b;
    return 0;
}

6. Factorial of a Number

Write a program to find the factorial of a number.

              
            
C++

          Solution
        
#include <iostream>
using namespace std;

int main() {
    int n = 5, fact = 1;
    for(int i = 1; i <= n; i++)
        fact *= i;
    cout << fact;
    return 0;
}

7. Reverse a Number

Write a program to reverse a number.

              
            
C++

          Solution
        
#include <iostream>
using namespace std;

int main() {
    int num = 123, rev = 0;
    while(num != 0) {
        rev = rev * 10 + num % 10;
        num /= 10;
    }
    cout << rev;
    return 0;
}

8. Count Digits

Write a program to count the number of digits in a number.

              
            
C++

          Solution
        
#include <iostream>
using namespace std;

int main() {
    int num = 12345, count = 0;
    while(num != 0) {
        num /= 10;
        count++;
    }
    cout << count;
    return 0;
}

9. Check Prime Number

Write a program to check whether a number is prime.

              
            
C++

          Solution
        
#include <iostream>
using namespace std;

int main() {
    int num = 7;
    bool isPrime = true;
    for(int i = 2; i < num; i++) {
        if(num % i == 0) {
            isPrime = false;
            break;
        }
    }
    if(isPrime)
        cout << "Prime";
    else
        cout << "Not Prime";
    return 0;
}

10. Sum of Digits

Write a program to find the sum of digits of a number.

              
            
C++

          Solution
        
#include <iostream>
using namespace std;

int main() {
    int num = 123, sum = 0;
    while(num != 0) {
        sum += num % 10;
        num /= 10;
    }
    cout << sum;
    return 0;
}

Tips to Improve Coding Skills

1. Practice daily.

2. Solve problems step-by-step.

3. Understand logic, not just code.

4. Try variations of problems.

Conclusion

Practicing coding exercises regularly helps build a strong foundation in C++ programming.

Start with simple problems and gradually move to more complex ones to improve your skills.