#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define EMPS_SIZE 20
#define SSN_SIZE 9
#define MAX_EMPS 19
typedef struct {
int salary;
int yearBorn;
char ssn[SSN_SIZE];
char * name;
}
Employee;
Employee * emps[EMPS_SIZE];
int totalEmps = 0;
void displayEmployee(Employee * person) {
printf("\nYou entered the name: %s\nYou entered the year: %d\nYou entered the social security number: ", person -> name, person -> yearBorn);
for (int i = 0; i < SSN_SIZE; i++) {
if (i == 2) {
printf("%c-", person -> ssn[i]);
} else if (i == 4) {
printf("%c-", person -> ssn[i]);
} else if (i == 9) {
printf("%c ", person -> ssn[i]);
} else {
printf("%c", person -> ssn[i]);
}
}
int num = person -> salary / 1000;
int num2 = person -> salary % 1000;
printf("\nYou entered the salary: $%d,%03d\n\n\n", num, num2);
}
void readEmployee(Employee * person) {
int * inputYearBorn = & person -> yearBorn;
int * inputSalary = & person -> salary;
char buff[256];
printf("Welcome to the add employee manager!\n\n");
printf("Enter the Employees name: ");
scanf("%s", buff);
person -> name = malloc(strlen(buff + 1));
strcpy(person -> name, buff);
printf("Enter the year the Employee was born: ");
scanf("%d", inputYearBorn);
printf("Enter the salary the Employee makes: ");
scanf("%d", inputSalary);
printf("Enter the ssn of the Employee: ");
scanf("%s", buff);
* person -> ssn = '\0';
strncat(person -> ssn, buff, 9);
}
void createEmployee(void) {
if (totalEmps <= MAX_EMPS) {
for (int i = 0; i <= MAX_EMPS; ++i) {
if (emps[i] == NULL) {
Employee * newEmployee = (Employee * ) malloc(sizeof(Employee));
emps[i] = newEmployee;
totalEmps++;
readEmployee(newEmployee);
break;
}
}
} else {
printf("You cannot hire anymore employees\n\n");
}
}
void releaseEmployee(Employee * person) {
free(person -> name);
free(person);
}
void listEmployees(void) {
for (int i = 0; i <= MAX_EMPS; i++) {
if (emps[i] == NULL) {
printf("No employee at : %d\n", i);
} else {
printf("Employee position in list : %d\n", i);
displayEmployee(emps[i]);
}
}
printf("Thats all the employees!\n\n");
}
Employee * findEmployee(char * name) {
printf("You entered the name: %s\n\n", name);
int counter = 0;
for (int i = 0; i < totalEmps; i++) {
if (!strcmp(emps[i] -> name, name)) {
printf("%s is an employee, They are at: %d\n", name, i);
return emps[i];
} else {
counter++;
}
}
printf("This employee doesn't exist\n");
return NULL;
}
void fireEmployee(char * name) {
printf("You entered the name: %s\n\n", name);
int counter = 0;
for (int i = 0; i < totalEmps; i++) {
if (!strcmp(emps[i] -> name, name)) {
printf("%s is now fired! They were at: %d\n", name, i);
free(emps[i]);
emps[0] = NULL;
return;
} else {
counter++;
}
}
printf("This employee doesn't exist\n");
return;
}
int salaryComp(Employee ** a, Employee ** b) {
Employee * empA = * a;
Employee * empB = * b;
if ( & empA -> salary == NULL && & empB -> salary != NULL) {
printf("I got here 2\n\n");
return 1;
} else if ( & empB -> salary == NULL && & empA -> salary != NULL) {
printf("I got here 3\n\n");
return -1;
} else if ( & empA -> salary == NULL && & empB -> salary == NULL) {
printf("I got 4\n\n");
return -1;
} else {
printf("empA salary == %d\n", empA -> salary);
printf("empB salary == %d\n", empB -> salary);
return (empB -> salary - empA -> salary);
}
}
int nameComp(Employee ** a, Employee ** b) {
Employee * empA = * a;
Employee * empB = * b;
if (empA == NULL && empB != NULL) {
return 1;
} else if (empB == NULL && empA != NULL) {
return -1;
} else if (empA == NULL && empB == NULL) {
return -1;
} else {
return 0;
}
}
void sort(Employee * base[], int n, int( * compareFunc)(Employee ** , Employee ** )) {
qsort((void ** ) base, n, sizeof(void * ), (int( * )(const void * ,
const void * )) compareFunc);
}
void main(void) {
int end = 1;
char * command;
char buff[256];
char * findEmp;
char findBuff[256];
char * sortType;
char sortBuff[256];
char hire[] = "HIRE";
char list[] = "LIST";
char quit[] = "QUIT";
char find[] = "FIND";
char fire[] = "FIRE";
char _sort[] = "SORT";
char salary[] = "SALARY";
char name[] = "NAME";
printf("Welcome to the Employee Manager dashboard!\n");
while (end) {
printf("Would you like to HIRE, LIST, FIND, FIRE, SORT, or QUIT?\n\n");
scanf("%s", buff);
command = malloc(strlen(buff + 1));
strcpy(command, buff);
printf("You entered the command: %s\n\n", command);
if (!strcmp(command, hire)) {
createEmployee();
} else if (!strcmp(command, list)) {
listEmployees();
} else if (!strcmp(command, find)) {
printf("Enter an employee name, to find if they are a current employee:\n\n");
scanf("%s", findBuff);
findEmp = malloc(strlen(findBuff + 1));
strcpy(findEmp, findBuff);
findEmployee(findEmp);
} else if (!strcmp(command, fire)) {
printf("Enter an employee name, to fire\n\n");
scanf("%s", findBuff);
findEmp = malloc(strlen(findBuff + 1));
strcpy(findEmp, findBuff);
fireEmployee(findEmp);
} else if (!strcmp(command, _sort)) {
printf("Would you like to sort by SALARY or NAME?\n\n");
scanf("%s", sortBuff);
sortType = malloc(strlen(sortBuff + 1));
strcpy(sortType, sortBuff);
if (!strcmp(sortType, name)) {
printf("sorting by name\n\n");
sort(emps, EMPS_SIZE, nameComp);
listEmployees();
} else if (!strcmp(sortType, salary)) {
printf("sorting by salary\n\n");
sort(emps, EMPS_SIZE, salaryComp);
listEmployees();
} else {
printf("Improper sort type entered, exiting to main menu\n\n");
}
} else if (!strcmp(command, quit)) {
printf("Quitting the managers dashboard!\n\n");
end = 0;
} else {
printf("Please enter a proper command\n\n");
}
}
}
void writeEmpToFile(Employee *emp, FILE *f) {
fwrite(&emp->salary, sizeof(emp->salary), 1, f);
fwrite(&emp->yearBorn, sizeof(emp->yearBorn), 1, f);
fwrite(emp->ssn, sizeof(char), SSN_SIZE, f);
int len = strlen(emp->name) + 1;
fwrite(&len, sizeof(int), 1, f);
fwrite(emp->name, sizeof(char), len, f);
}
