C Program for employee salary calculation using structure

In this tutorial, we will write a C program to calculate the total salary of employees using structure.

Program for salary calculation using structure

The explanation of this is at the end of the program along with the sample output.

#include <stdio.h>

// Define the structure for employee details
struct Employee {
    int id;            // Employee ID
    char name[50];     // Employee Name
    float basic_salary; // Employee Basic Salary
    float bonus;       // Employee Bonus
    float total_salary; // Employee Total Salary (Basic + Bonus)
};

// Function to calculate total salary
void calculateTotalSalary(struct Employee *emp) {
    emp->total_salary = emp->basic_salary + emp->bonus;
}

int main() {
    int num_employees, i;

    // Ask user for the number of employees
    printf("Enter the number of employees: ");
    scanf("%d", &num_employees);

    // Declare an array of structures to hold details for multiple employees
    struct Employee employees[num_employees];

    // Taking input for each employee
    for (i = 0; i < num_employees; i++) {
        printf("\nEnter details for employee %d:\n", i + 1);

        printf("Enter Employee ID: ");
        scanf("%d", &employees[i].id);

        printf("Enter Employee Name: ");
        scanf("%s", employees[i].name);

        printf("Enter Employee Basic Salary: ");
        scanf("%f", &employees[i].basic_salary);

        printf("Enter Employee Bonus: ");
        scanf("%f", &employees[i].bonus);

        // Calculate the total salary for the current employee
        calculateTotalSalary(&employees[i]);
    }

    // Displaying the employee details along with the total salary
    printf("\nEmployee Details:\n");
    for (i = 0; i < num_employees; i++) {
        printf("\nDetails of Employee %d:\n", i + 1);
        printf("ID: %d\n", employees[i].id);
        printf("Name: %s\n", employees[i].name);
        printf("Basic Salary: %.2f\n", employees[i].basic_salary);
        printf("Bonus: %.2f\n", employees[i].bonus);
        printf("Total Salary: %.2f\n", employees[i].total_salary);
    }

    return 0; // Indicate that the program ended successfully
}

How this program works?

Include Header File: The following line includes the standard input-output library which is necessary for using printf and scanf functions.

#include <stdio.h>

Structure Definition:

struct Employee {
    int id;            // Employee ID
    char name[50];     // Employee Name
    float basic_salary; // Employee Basic Salary
    float bonus;       // Employee Bonus
    float total_salary; // Employee Total Salary (Basic + Bonus)
};

This defines a structure named Employee with five fields: id (integer), name (character array of size 50), basic_salary (float), bonus (float), and total_salary (float).

Function to Calculate Total Salary:

void calculateTotalSalary(struct Employee *emp) {
    emp->total_salary = emp->basic_salary + emp->bonus;
}

This function calculates the total salary by adding the basic salary and bonus, and stores the result in the total_salary field of the Employee structure using emp variable.

Main Function:

int main() {
    int num_employees, i;

    // Ask user for the number of employees
    printf("Enter the number of employees: ");
    scanf("%d", &num_employees);

    // Declare an array of structures to hold details for multiple employees
    struct Employee employees[num_employees];

In the main function, we have a variable num_employees to store the number of employees and an array of Employee structures to store details for each employee.

Taking Input:

for (i = 0; i < num_employees; i++) {
    printf("\nEnter details for employee %d:\n", i + 1);

    printf("Enter Employee ID: ");
    scanf("%d", &employees[i].id);

    printf("Enter Employee Name: ");
    scanf("%s", employees[i].name);

    printf("Enter Employee Basic Salary: ");
    scanf("%f", &employees[i].basic_salary);

    printf("Enter Employee Bonus: ");
    scanf("%f", &employees[i].bonus);

    // Calculate the total salary for the current employee
    calculateTotalSalary(&employees[i]);
}

Here, we are taking employee details from the user and calling function calculateTotalSalary to calculate the total salary of each employee.

Displaying Details:

printf("\nEmployee Details:\n");
for (i = 0; i < num_employees; i++) {
    printf("\nDetails of Employee %d:\n", i + 1);
    printf("ID: %d\n", employees[i].id);
    printf("Name: %s\n", employees[i].name);
    printf("Basic Salary: %.2f\n", employees[i].basic_salary);
    printf("Bonus: %.2f\n", employees[i].bonus);
    printf("Total Salary: %.2f\n", employees[i].total_salary);
}

Displaying details of each employee, including the calculated total salary.

Return Statement:

return 0; // Indicate that the program ended successfully

This line indicates that the program has ended successfully by returning 0 from the main function.

Output:

Enter the number of employees: 2

Enter details for employee 1:
Enter Employee ID: 1001
Enter Employee Name: Chaitanya
Enter Employee Basic Salary: 55000
Enter Employee Bonus: 5000

Enter details for employee 2:
Enter Employee ID: 1002
Enter Employee Name: Rahul
Enter Employee Basic Salary: 64000
Enter Employee Bonus: 6000

Employee Details:

Details of Employee 1:
ID: 1001
Name: Chaitanya
Basic Salary: 55000.00
Bonus: 5000.00
Total Salary: 60000.00

Details of Employee 2:
ID: 1002
Name: Rahul
Basic Salary: 64000.00
Bonus: 6000.00
Total Salary: 70000.00