Can you explain what is meant by the concept of execution flow in programming?

Execution flow is the order in which instructions of a program are executed by the processor. In programming, this means the sequence of operations performed one after another, including function calls, loops, conditions, and exception handling.

For example, in Python:

print("Start")
for i in range(3):
    print(i)
print("End")

Here, the execution flow goes from top to bottom: first "Start" is printed, then numbers 0 to 2 are printed three times, and finally "End". Understanding the execution flow is important for debugging and writing correct code.