Programming Fundamentals Using C/C++ Lecture # 04(B)

Описание: In this lecture, the fundamental steps involved in program development are revisited, with a particular focus on logic building to strengthen students’ problem-solving abilities. Five problem-based examples are discussed in detail to enhance conceptual understanding. Each example is carefully analyzed to address every minor concept and concern related to program design, development, and implementation. Finally, the results are displayed in a well-formatted console output.

*Examples Covered:*

*Example 5:* Accept two values from the user and swap them.
*Example 6:* Input the length and breadth of a rectangle and the radius of a circle. Write a program to compute the area and perimeter of the rectangle and the area and circumference of the circle.
*Example 7:* Input a five-digit number and write a program to reverse it.
*Example 8:* A cashier possesses currency notes of denominations 10, 50, and 100. For an amount (in hundreds) entered by the user, calculate the total number of currency notes required for withdrawal.
*Example 9:* Convert an amount from the old British monetary system (pounds, shillings, and pence) to the modern decimal pound system. For instance:

```
Enter pounds: 7
Enter shillings: 17
Enter pence: 9
Decimal pounds = £7.89
```

(Note: In most compilers, the pound sign (£) can be represented using the decimal code 156 or the hexadecimal character constant ‘\x9c’.)

This lecture aims to strengthen the students’ understanding of programming fundamentals through practical, real-world examples and step-by-step logical reasoning.

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