Posts tagged

Control Structures

Loops in Programming: Repeating with For and While

Explains the two main loop types in Python and when to use each. For loops iterate over sequences or use range() to repeat a fixed number of times. While loops run as long as a condition holds, making them suitable for open-ended repetition where the iteration count isn't known upfront. Covers nested loops for working with 2D data like matrices, and the break and continue statements for fine-grained loop flow control. Practical exercise generates a full multiplication table using nested for loops.

Control Structures: Mastering Program Flow

Introduces conditional control structures as the mechanism for making programs react to different inputs. Explains if, else, and elif chains with progressively richer examples — voting eligibility check, multi-grade letter assignment — then compares Python's approach to switch/case statements found in C and Java, showing how to replicate the same logic with a dictionary lookup. Ends with a graded letter assignment exercise that reinforces chaining multiple elif conditions to map numeric scores to A through F grades.