Basics
C++ Loops
Loop Structures
C++ loops use for while and do-while with break and continue.
Introduction to C++ Loops
Loops in C++ are used to execute a block of code repeatedly. C++ provides several types of loops, including for, while, and do-while loops. Understanding how to use these loops effectively allows you to automate repetitive tasks efficiently.
The For Loop
The for loop is used when the number of iterations is known beforehand. It consists of three parts: initialization, condition, and iteration. The syntax is as follows:
Here's an example of a for loop that prints numbers from 1 to 5:
The While Loop
The while loop continues to execute a block of code as long as a specified condition is true. The syntax is:
Here is a simple example that uses a while loop to print numbers from 1 to 5:
The Do-While Loop
The do-while loop is similar to the while loop, but it guarantees that the block of code is executed at least once. The syntax is:
Here is how you can use a do-while loop to print numbers from 1 to 5:
Using Break and Continue
C++ provides break and continue statements to control the flow of loops. The break statement exits the loop prematurely, while the continue statement skips the current iteration and continues with the next one.
Conclusion
Understanding and using loops is essential in C++ programming. Whether you use a for, while, or do-while loop depends on the specific task you wish to accomplish. The break and continue statements provide additional control over how loops execute.
