A loop repeats the same job until a list ends, or while a condition stays true.
for walks a list. while watches a condition.When for walks a list of three cities, the same line runs three times. while stops when the condition is false. If you never change the condition, the program stays there.
A loop is a programming structure that repeats a specific block of code until a condition is met or a list is exhausted. Instead of writing repetitive lines of code, such as manually entering weather data for ten different cities, a loop allows the computer to process the entire list efficiently.
Developers use loops when they need to perform the same task multiple times. The 'for' loop is typically used to iterate through a list, while the 'while' loop continues as long as a specific condition remains true. If the condition never changes, the loop becomes an infinite loop, causing the program to run indefinitely.
An infinite loop occurs when the loop's condition never becomes false. Because the condition remains true, the program continues to execute the same code block forever, which can cause the application to hang.
The 'for' loop is designed to walk through a list of items, running a set number of times. The 'while' loop is designed to watch a condition and runs as long as it is true.
To stop a loop, you must ensure that the condition being watched eventually becomes false. If you do not update the condition within the loop, the program will stay stuck in that process.