Small Projects For Beginners - C Language

 In here I will show you some small projects for beginners.

1. Calculator

2. To-Do List

3. Guess the Number Game

4. Bank Management System

5. Student Grade Calculator

6. Simple File Encryption/Decryption

7. Library Management System

8. Temperature Converter

These projects I have done with dev C++ .

A) Create a Calculator

• Create a basic calculator program that can perform arithmetic operations like addition, subtraction, multiplication, and division.
• Allow the user to input two numbers and choose the operation.
• Display the result.

       

       

#include <stdio.h>

int main() {

    int num1, num2;

    char operator;

    printf("Enter first number: ");

    scanf("%d", &num1);

    printf("Enter operator (+, -, *, /): ");

    scanf(" %c", &operator);

    printf("Enter second number: ");

    scanf("%d", &num2);

    switch (operator) {

        case '+':

            printf("Result: %d\n", num1 + num2);

            break;

        case '-':

            printf("Result: %d\n", num1 - num2);

            break;

        case '*':

            printf("Result: %d\n", num1 * num2);

            break;

        case '/':

            if (num2 != 0) {

                printf("Result: %.2f\n", (float)num1 / num2);

            } else {

                printf("Error: Division by zero.\n");

            }

            break;

        default:

            printf("Error: Invalid operator.\n");

    }

    return 0;

}

b) Create a Temperature Converter

• Develop a program that converts temperatures between Fahrenheit and Celsius.
• Allow users to input a temperature and choose the conversion direction.
• Display the converted temperature.

#include <stdio.h>

int main() {

    // Declare variables

    float temperature;

    char choice;

    // Display menu and get user choice

    printf("Temperature Converter\n");

    printf("1. Fahrenheit to Celsius\n");

    printf("2. Celsius to Fahrenheit\n");

    printf("Enter your choice (1 or 2): ");

    scanf(" %c", &choice);

    // Get temperature from user

    printf("Enter temperature: ");

    scanf("%f", &temperature);

    // Perform temperature conversion based on user choice

    switch (choice) {

        case '1':

            // Fahrenheit to Celsius conversion

            temperature = (temperature - 32) * 5 / 9;

            printf("Temperature in Celsius: %.2f\n", temperature);

            break;

        case '2':

            // Celsius to Fahrenheit conversion

            temperature = (temperature * 9 / 5) + 32;

            printf("Temperature in Fahrenheit: %.2f\n", temperature);

            break;

        default:

            // Invalid choice

            printf("Invalid choice. Please enter 1 or 2.\n");

    }

    return 0;

}