C Programming free projects idea’s

This C Programming free projects idea’s page is about Learn the fundamentals of C programming, including data types, variables, control structures, and functions. Explore examples and exercises to help you get started with C. If you don’t know the basic of C programming click here.

Basic Calculator:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

int main(void)
{
    // Read the operator and operands from the standard input
    char operator[4];
    double operand1, operand2;
    scanf("%s %lf %lf", operator, &operand1, &operand2);

    // Perform the specified operation
    if (strcmp(operator, "+") == 0)
    {
        printf("%.2f\n", operand1 + operand2);
    }
    else if (strcmp(operator, "-") == 0)
    {
        printf("%.2f\n", operand1 - operand2);
    }
    else if (strcmp(operator, "*") == 0)
    {
        printf("%.2f\n", operand1 * operand2);
    }
    else if (strcmp(operator, "/") == 0)
    {
        if (operand2 == 0)
        {
            printf("Error: Division by zero\n");
            return 1;
        }
        printf("%.2f\n", operand1 / operand2);
    }
    else if (strcmp(operator, "^") == 0)
    {
        printf("%.2f\n", pow(operand1, operand2));
    }
    else
    {
        printf("Error: Invalid operator\n");
        return 1;
    }

    return 0;
}

Text Based Game:

#include "stdio.h"
#include "stdlib.h"
#include "time.h"
#include "stddef.h"

int main(void)
{
    srand(time(NULL));  // Seed the random number generator

    // Introduction
    printf("Welcome to the dungeon crawl!\n");
    printf("You are a brave adventurer exploring a dangerous dungeon.\n");
    printf("You must navigate through the dungeon, fighting monsters and finding treasure.\n");

    // Main game loop
    while (1)
    {
        // Generate a random event
        int event = rand() % 3;  // Generates a random number between 0 and 2

        if (event == 0)
        {
            // Monster encounter
            printf("You encounter a monster!\n");
            printf("Do you want to fight or run? (f/r)\n");

            char choice;
            scanf(" %c", &choice);

            if (choice == 'f')
            {
                // Generate a random outcome for the battle
                int outcome = rand() % 2;  // Generates a random number between 0 and 1

                if (outcome == 0)
                {
                    printf("You defeat the monster and earn some treasure!\n");
                }
                else
                {
                    printf("The monster was too strong and you have been defeated.\n");
                    printf("Game over.\n");
                    break;
                }
            }
            else if (choice == 'r')
            {
                // Generate a random outcome for the escape
                int outcome = rand() % 2;  // Generates a random number between 0 and 1

                if (outcome == 0)
                {
                    printf("You successfully escape the monster.\n");
                }
                else
                {
                    printf("The monster catches up to you and you have been defeated.\n");
                    printf("Game over.\n");
                    break;
                }
            }
        }
        
    }
    return 0;  
}

Simple Salary Slip generator:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define NAME_LEN 50

struct Employee
{
    char name[NAME_LEN];
    int id;
    int days_present;
    double daily_rate;
    double pf;
    double travel_allowance;
    double insurance;
    double incentive;
};

int main(void)
{
    // Read the employee data from the standard input
    struct Employee employee;
    printf("Enter employee name: ");
    fgets(employee.name, NAME_LEN, stdin);
    printf("Enter employee ID: ");
    scanf("%d", &employee.id);
    printf("Enter number of days present in the month: ");
    scanf("%d", &employee.days_present);

    // Set the employee data
    employee.daily_rate = 1000;
    employee.pf = 0.1;
    employee.travel_allowance = 500;
    employee.insurance = 0.2;
    employee.incentive = 1000;

    // Calculate the gross salary and deductions
    double gross_salary = employee.days_present * employee.daily_rate;
    double pf_deduction = gross_salary * employee.pf;
    double insurance_deduction = gross_salary * employee.insurance;
    double total_deductions = pf_deduction + insurance_deduction;

    // Calculate the net salary
    double net_salary = gross_salary + employee.travel_allowance + employee.incentive - total_deductions;

    // Print the salary slip
    printf("\n");
    printf("Salary Slip\n");
    printf("------------\n");
    printf("Employee Name: %s", employee.name);
    printf("Employee ID: %d\n", employee.id);
    printf("Days Present: %d\n", employee.days_present);
    printf("Gross Salary: $%.2f\n", gross_salary);
    printf("PF Deduction: $%.2f\n", pf_deduction);
    printf("Insurance Deduction: $%.2f\n", insurance_deduction);
    printf("Total Deductions: $%.2f\n", total_deductions);
    printf("Travel Allowance: $%.2f\n", employee.travel_allowance);
    printf("Incentive: $%.2f\n", employee.incentive);
    printf("Net Salary: $%.2f\n", net_salary);

    return 0;
}

Output of the code:

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