Question

what kind of program construct has a looping branch of code?

Answer 1

A program construct that features a looping branch of code is typically referred to as a **loop**. Loops allow a section of code to be executed repeatedly based on a specified condition. There are several types of loops commonly found in programming:

1. **For Loop**: A loop that runs a specific number of times. It often uses a counter to control the number of iterations.
```python
for i in range(5):
print(i)
```

2. **While Loop**: A loop that continues to execute as long as a specified condition remains true.
```python
i = 0
while i < 5:
print(i)
i += 1
```

3. **Do-While Loop**: A variation of the while loop that executes the loop body at least once before checking the condition at the end.
```javascript
do {
console.log(i);
i++;
} while (i < 5);
```

4. **Enhanced For Loop** (or **For-Each Loop**): This type of loop is used to iterate over elements in a collection or array.
```java
for (String item : list) {
System.out.println(item);
}
```

All of these constructs enable repeated execution of code, making them essential for tasks that require iteration, such as processing arrays, lists, or handling repetitive user input.