without cls

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

/* structure to store employee salary details */
struct employee {
    int empId;
    char name[255];
    int basic, bonus;
    int absent, salaryDeduc;
    float gross, net;
};

/* prints payslip for the requested employee */
void printSalary(struct employee e1) {
    printf("\n\t\t************************************************");
    printf("\n\t\t*           EMPLOYEE OFFICIAL PAY SLIP          *");
    printf("\n\t\t************************************************\n");
    printf("\n\t\tName: \t\t\t %s", e1.name);
    printf("\n\t\tEmployee ID: \t\t %d", e1.empId);
    printf("\n\n\t\tBasic Salary: \t\t %d", e1.basic);
    printf("\n\t\tBonus: \t\t\t %d", e1.bonus);
    printf("\n\t\t------------------------------------------------");
    printf("\n\t\tGross Salary: \t\t %.2f PHP", e1.gross);
    printf("\n\t\t------------------------------------------------\n");
    printf("\n\n\t\tDeductions (4%% per absent)");
    printf("\n\t\tSalary Deduction: (Absent * 0.04) x Basic Salary");
    printf("\n\t\tSalary Deduction: \t %d", e1.salaryDeduc);
    printf("\n\t\t------------------------------------------------");
    printf("\n\t\tNet Salary: \t\t %.2f PHP", e1.net);
    printf("\n\t\t------------------------------------------------\n\n");
}

/* display all the employee records entered */
void display(struct employee e1) {
    printf("\n\t\t____________________________________________\n");
    printf("\t\tEmployee ID: \t\t %d", e1.empId);
    printf("\n\t\t--------------------------------------------\n");
    printf("\t\tEmployee Name: \t %s", e1.name);
    printf("\n\t\tBasic Salary: \t %d", e1.basic);
    printf("\n\t\tBonus: \t\t %d", e1.bonus);
    printf("\n\t\tAbsent: \t %d", e1.absent);
}

int main() {
    int i, num, flag, empID;
    int choice;
    struct employee *e1;

    printf("\n\t\t************************************************");
    printf("\n\t\t*           EMPLOYEE PAYROLL SYSTEM            *");
    printf("\n\t\t************************************************\n");
    /* get the number of employees from the user  */
    printf("\n\t\tEnter the number of employees:");
    scanf("%d", &num);

    /* dynamically allocate memory to store employee salary details */
    e1 = (struct employee *)malloc(sizeof(struct employee) * num);
    system("cls");
    printf("\n\t\t************************************************");
    printf("\n\t\t*           EMPLOYEE PAYROLL SYSTEM            *");
    printf("\n\t\t************************************************\n");
    /* get the employee salary details from the customer */
    printf("\n\t\tEnter details for every employee:\n");
    for (i = 0; i < num; i++) {
        printf("\n\t\tEmployee ID: ");
        scanf("%d", &(e1[i].empId));
        fflush(stdin);
        printf("\t\tEmployee Name: ");
        gets(e1[i].name);
        printf("\n\t\tBasic Salary: PHP ");
        scanf("%d", &(e1[i].basic));
        printf("\t\tBonus: PHP");
        scanf("%d", &(e1[i].bonus));
        printf("\n\t\tEnter the deductions: \n");
        printf("\t\tAbsent: ");
        scanf("%d", &(e1[i].absent));
        printf("\n");
    }

    /* printing payslip for the given employee ID */
    while (1) {
        printf("\n\n\t\t[1] SHOW ALL RECORDS\n");
        printf("\t\t[2] ADD NEW EMPLOYEE RECORD\n");
        printf("\t\t[3] PRINT THE SALARY SLIP\n");
        printf("\t\t[4] EXIT\n");
        printf("\n\t\tEnter your choice : ");
        scanf("%d", &choice);

        switch(choice){
        case 1 : /*printing all the records entered before printing the slip */
            printf("\n\t\t************************************************");
            printf("\n\t\t*                 EMPLOYEE LIST                *");
            printf("\n\t\t************************************************\n");

            for (i = 0; i < num; i++) {
                    display(e1[i]);
            }
            printf("\n\n");
            break;
        case 2 : /*adding a new member in the employee list created */
            printf("\n\t\t************************************************");
            printf("\n\t\t*               ADD NEW EMPLOYEE               *");
            printf("\n\t\t************************************************\n");
            num++;
            i = num-1;
            printf("\n\t\tEmployee ID: ");
            scanf("%d", &(e1[i].empId));
            fflush(stdin);
            printf("\t\tEmployee Name: ");
            gets(e1[i].name);
            printf("\n\t\tBasic Salary: PHP ");
            scanf("%d", &(e1[i].basic));
            printf("\t\tBonus: PHP");
            scanf("%d", &(e1[i].bonus));
            printf("\n\t\tEnter the deductions: \n");
            printf("\t\tAbsent: ");
            scanf("%d", &(e1[i].absent));
            printf("\n");
            break;
        case 3 :        /* gross and net salary calculation */
            for (i = 0; i < num; i++) {
                    e1[i].gross = e1[i].basic + e1[i].bonus;
                    e1[i].salaryDeduc = (0.04 * e1[i].absent) * e1[i].basic;
                    e1[i].net = e1[i].gross - e1[i].salaryDeduc;
            }

            printf("\n\t\t************************************************");
            printf("\n\t\t*           EMPLOYEE OFFICIAL PAY SLIP          *");
            printf("\n\t\t************************************************\n");

            printf("\n\t\tEnter employee ID to get payslip:");
            scanf("%d", &empID);

            flag = 0;
            for (i = 0; i < num; i++) {
                    if (empID == e1[i].empId) {
                            printSalary(e1[i]);
                            flag = 1;
                    }
            }

            if (!flag) {
                    printf("\n\n\t\tNo Record Found!!\n");
            }
            break;
        case 4 :
            exit(0);
            break;

        default:
            printf("\n\t\tInvalid Choice");
        }
        printf("\n\t\tPress any key to go back in Main Menu...");
        getch();
    }
    return 0;
}