C++源代码简单员工管理系统

#include <iostream> #include <cstdio> #include <cstring> #include <cstdlib> #include <conio.h> #include <iomanip> using namespace std; int main() { FILE *fp, *ft; char another, choice; struct employee { char first_name[50], last_name[50]; int Age; long Salary; }; struct employee e; char xfirst_name[50], xlast_name[50]; long int recsize; fp=fopen("users.txt","rb+"); if (fp == NULL) { fp = fopen("users.txt","wb+"); if (fp==NULL) { puts("Cannot open file"); return 0; } } recsize = sizeof(e); while(1) { system("cls"); cout << "\n\t\t###### EMPLOYEE MANAGEMENT SYSTEM ######"; cout <<"\n\n "; cout << "\n\n"; cout << "\n \t\t\t 1. Add Employee Record"; cout << "\n \t\t\t 2. Display Employee Record"; cout << "\n \t\t\t 3. Modify Employee Record"; cout << "\n \t\t\t 4. Delete Employee Record"; cout << "\n \t\t\t 5. Exit"; cout << "\n\n"; cout << "\t\t\t Select Your Choice :=> "; fflush(stdin); choice = getche(); switch(choice) { case '1' : fseek(fp,0,SEEK_END); another ='Y'; while(another == 'Y' || another == 'y') { system("cls"); cout << "Enter the First Name : "; cin >> e.first_name; cout << "Enter the Last Name : "; cin >> e.last_name; cout << "Enter the Employee Age : "; cin >> e.Age; cout << "Enter the Employee Salary : "; cin >> e.Salary; fwrite(&e,recsize,1,fp); cout << "\n Add Another Record (Y/N) "; fflush(stdin); another = getchar(); } break; case '2': system("cls"); rewind(fp); cout << "=== Display Records in the Database ==="; cout << "\n"; while (fread(&e,recsize,1,fp) == 1) { cout << "\n"; cout << "Firstname" << setw(14) << "Lastname" << setw(10) << "Age" << setw(10) << "Salary"; cout << "\n"; cout <<"\n" << e.first_name << setw(16) << e.last_name; cout << setw(12) <<e.Age << setw(10) << e.Salary; } cout << "\n\n"; system("pause"); break; case '3' : system("cls"); another = 'Y'; while (another == 'Y'|| another == 'y') { cout << "\nEnter the last name of the Employee : "; cin >> xlast_name; cout << "\n"; rewind(fp); while (fread(&e,recsize,1,fp) == 1) { if (strcmp(e.last_name,xlast_name) == 0) { cout << "Enter new the First Name : "; cin >> e.first_name; cout << "Enter new the Last Name : "; cin >> e.last_name; cout << "Enter new Employee Age : "; cin >> e.Age; cout << "Enter new Employee Salary : "; cin >> e.Salary; fseek(fp, - recsize, SEEK_CUR); fwrite(&e,recsize,1,fp); break; } else cout<<"record not found"; } cout << "\nModify Another Record (Y/N) "; fflush(stdin); another = getchar(); } break; case '4': system("cls"); another = 'Y'; while (another == 'Y'|| another == 'y') { cout << "\nEnter the last name of the Employee to delete : "; cin >> xlast_name; ft = fopen("temp.dat", "wb"); rewind(fp); while (fread (&e, recsize,1,fp) == 1) if (strcmp(e.last_name,xlast_name) != 0) { fwrite(&e,recsize,1,ft); } fclose(fp); fclose(ft); remove("users.txt"); rename("temp.dat","users.txt"); fp=fopen("users.txt","rb+"); cout << "\nDelete Another Record (Y/N) "; fflush(stdin); another = getchar(); } break; case '5': fclose(fp); cout << "\n\n"; cout << "\t\t THANKS YOU!"; cout << "\n\n"; exit(0); } } system("pause"); return 0; }