How do you exit from the infinite loop in Turbo C++?
When we talk about programming languages, loops are basically a technique that is used in programming languages for the purpose of doing a task that demands to be repeated again and again. Instead of rewriting the code again and again, we just simply put that specific block of code inside the loop and give a specific condition till when this code is supposed to be executed. Sometimes, if there is an error or due to some other unforeseen circumstances, these loops can go on to execute continuously until and unless a specific condition is met or this loop is purposely stopped. These kinds of loops are known as the infinite loops. This condition usually occurs when something evident takes place, or the condition for stopping the loop isn't set up right. Whatever it might be, it is very important to know when and how to stop the loop so the program can continue functioning normally. In Turbo C++, there are several different ways to stop this; we will witness all of those in this tutorial.
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The various kind of strategies used to exit an infinite loop will be discussed in the following section of the tutorial: -
1. CTRL+C (Keyboard Interrupt)
When we say that this is one of the quickest methods, it's true. We can stop or take out a program that is stuck in an infinite loop in turbo C++ by pressing ctrl + c on the keyboard. It's basically like you are saying to the system that now you're finished; after this point, I will take control and guide you about what needs to be done. There's a consequence as well; when we use this shortcut, our program ends suddenly, which might not always be wanted when we are working with complex programs.
2. Break Statements
When we talk about using conditional break statements, it usually means that we can have the control of stopping our program when something unusual or specific happens in our system or program. It's considered to be a better approach than keyboard exit because it helps us leave the program very smoothly when, in the other one, our program would just suddenly stop. When using this loop, we need to make sure that the condition we are using to break out of the loop is accurate and right and free from errors.
3. Flags
Flags are basically signals that will help us determine how our program is working and how it will flow within our system. We can also create a variable using the flag to decide when to stop a program within the system. If we want to change the status of a flag based on certain conditions, the program can easily check whether they have to stop or continue with the program. It's crucial that we set up the flags at the beginning properly and correctly and make sure that they are not disturbed or changed in between to yield proper results.
4. Exception Handling
Exception Handling is basically like having some kind of backup plan to keep up just in case something goes wrong in the program, and we have to maintain it. Exception handling usually contains some kind of code that needs to be executed when something unexpected happens; then we keep a part of the code that needs to be executed when something goes wrong.
5. Timeout Mechanism
Timeout mechanisms are like setting a timer for a task. They are like an alarm clock: if a program or part of the program is taking too much time to complete itself or to be executed, then it is stopped then and there. This becomes very useful when we want something to be completed within a certain period and it takes too much time to complete. Then, we can use the timeout mechanism.
Conclusion
When it comes to getting out of the never-ending loops, we have to really plan everything and take care of everything when planning to execute anything. We have to take care of almost every possible outcome of a loop. Otherwise, it will become chaos. We should know about the proper strategies used to control infinite loops or put a stop condition on them. The various strategies could involve using keyboard shortcuts, conditional statements to break out of the loops, timeout mechanisms, and other exceptional handling techniques, such as knowing the concepts of the loops and the right methods to stop them. We can easily create efficient programs that will not break easily.