4.1 Implement while control loop for solving iterative problems.

The while loop in Python repeatedly executes a block of code as long as a given condition is true. It is particularly useful when the number of iterations is not known beforehand and depends on some condition being met.

while condition:
    # code block to be executed repeatedly

# Python program to demonstrate the use of a while loop

# Initialize a variable
counter = 1

# Use while loop to print numbers from 1 to 5
while counter <= 5:
    print(f"Counter is: {counter}")
    counter += 1

print("Loop is done!")

OUTPUT:
Counter is: 1
Counter is: 2
Counter is: 3
Counter is: 4
Counter is: 5
Loop is done!