Unlocking the Power of C++: Printing Prime Numbers Between Two Intervals
To harness the full potential of C++ programming, it’s essential to have a solid grasp of fundamental concepts such as for loops, break statements, continue statements, functions, and user-defined function types. With these building blocks in place, you can tackle more complex tasks, like printing prime numbers between two intervals.
The Challenge: Printing Prime Numbers
Imagine you’re tasked with writing a program that prints all prime numbers between two given integers. Sounds straightforward, but it requires a deep understanding of how to create and utilize functions effectively.
The Solution: printPrime() and isPrime() Functions
To tackle this challenge, we’ll create two functions: printPrime() and isPrime(). The printPrime() function takes two integers, n1 and n2, as input and internally calls the isPrime() function to check if each number between n1 and n2 is prime. If isPrime() returns true, the number is written to standard output; otherwise, no action is taken.
Swapping Numbers: A Crucial Step
But what if the user enters the larger number first? To avoid program failure, we need to swap the numbers. This ensures that num1 is always greater than num2, a crucial assumption made within the printPrime() function’s for loop.
Putting it All Together
By combining these elements, we can create a robust program that efficiently prints prime numbers between two intervals. With a solid understanding of C++ fundamentals and effective function creation, you’ll be well-equipped to tackle even the most complex programming challenges.