Master C Programming With Simple Real-Life Examples

Can You Build a Shopping Bill Using C?

Imagine you go to a shop and buy:

• 2 notebooks × ₹50

• 3 pens × ₹10

How does the computer calculate your total bill?

Today, we'll build a simple shopping-bill program in C! 💻

#include <stdio.h>

int main() {
    int notebooks, pens;
    int total;

    printf("Enter number of notebooks: ");
    scanf("%d", &notebooks);

    printf("Enter number of pens: ");
    scanf("%d", &pens);

    total = (notebooks * 50) + (pens * 10);

    printf("Your total bill is: ₹%d", total);

    return 0;
}

🎯 What you learn from this one small program:

• How variables store information
• How scanf() takes input
• How printf() displays output
• How multiplication and addition work in a program
• How a real-world problem can be converted into code

And this is just the beginning! From here, we can turn the same idea into a discount calculator, restaurant bill, ATM program, student marks calculator and much more.

💡 My teaching approach: I don't want students to just memorize C syntax. I want them to understand why we write each line and connect programming concepts to things they see in everyday life.

Let's make coding feel less like a subject and more like solving real problems! 🚀