This article shares the specific code of C language staff information management system for your reference, the specific content is as follows
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>
struct worker
{
char ID[20];// Work number
char name[20];// The name
char sex[5];// gender
char born[20];// birthday
char edu[20];// Record of formal schooling
char position[20];// position
char wage[10];// wage
char address[100];// address
char tel[15];// The phone
}work[1000];
int n ;
// File read-Write module
void read()// Read the data
{
FILE *fp;
int i = 0;
if( (fp = fopen("d:\\date.txt","r")) == NULL )
{
printf(" please D New in the root directory 1 A text file named date\n\n\n");
system("pause");
system("cls");
return ;
}
fscanf(fp,"%d\n",&n);
while(i < n)
{
fscanf(fp,"%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",work[i].ID,work[i].name,work[i].sex,work[i].born,work[i].edu,work[i].position,work[i].wage,work[i].address,work[i].tel);
i ++;
}
fclose(fp);
}
void write()// Write data
{
FILE *fp;
int i = 0;
if( (fp = fopen("d:\\date.txt","w")) == NULL )
{
printf(" Unable to open file! \n");
return ;
}
fprintf(fp,"%d\n",n);
while(i < n)
{
fprintf(fp,"%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",work[i].ID,work[i].name,work[i].sex,work[i].born,work[i].edu,work[i].position,work[i].wage,work[i].address,work[i].tel);
i ++;
}
fclose(fp);
}
// Input module
void input()// Input from the keyboard
{
int i;
int flag;// Marks whether the job number already exists
char c;// instruction Y?N
read();// Read the original data in the file before entering the data
do
{
flag = 0;
printf("\t\t Please enter the employee's job number : \n\t\t");
scanf("%s",work[n].ID);
for(i = 0 ; i < n ; i ++)
{
if(strcmp(work[i].ID,work[n].ID) == 0)
{
flag = 1;
break;
}
}
if(flag)
{
printf(" The number already exists! \n\n");
printf("\t\t Whether to continue typing ?(Y/N): ");
scanf("%*c%c",&c);
if(c == 'N' || c == 'n') break;
continue;
}
printf("\t\t Please enter the name of the employee : \n\t\t");
scanf("%s",work[n].name);
printf("\t\t Please enter the gender of the employee : \n\t\t");
scanf("%s",work[n].sex);
printf("\t\t Please enter the date of birth of the employee : \n\t\t");
scanf("%s",work[n].born);
printf("\t\t Please enter the educational background of the employee : \n\t\t");
scanf("%s",work[n].edu);
printf("\t\t Please enter the position of the employee : \n\t\t");
scanf("%s",work[n].position);
printf("\t\t Please enter the salary of the staff : \n\t\t");
scanf("%s",work[n].wage);
printf("\t\t Please enter the address of the employee : \n\t\t");
scanf("%s",work[n].address);
printf("\t\t Please enter the employee's telephone number : \n\t\t");
scanf("%s",work[n].tel);
printf("\t\t Whether to continue typing ?(Y/N): ");
scanf("%*c%c",&c);
n ++;
}while( c != 'N' && c != 'n');
write();
printf("\n\n Data saved! \n\n");
}
// Display module
void output_inf(int id)
{
printf("\t\t Work number : %s\n",work[id].ID);
printf("\t\t The name : %s\n",work[id].name);
printf("\t\t gender : %s\n",work[id].sex);
printf("\t\t Date of birth : %s\n",work[id].born);
printf("\t\t Record of formal schooling : %s\n",work[id].edu);
printf("\t\t position : %s\n",work[id].position);
printf("\t\t wage : %s\n",work[id].wage);
printf("\t\t address : %s\n",work[id].address);
printf("\t\t The phone : %s\n",work[id].tel);
printf("\n\n\n");
}
void show()// Displays all employee information
{
int i;
read();
if(n == 0) printf(" No record !\n\n");
else
for(i = 0 ; i < n ; i ++)
{
output_inf(i);
}
}
// The query module
void que()// Query information
{
char num;
int flag,i;
char q_id[20] ;// The query work number
char q_name[20] ;// The query name
char q_edu[20] ; // Query degree
char q_position[20] ;// The query position
char c;// instruction Y?N
read();// After opening the program, to query the previous data, to read in first
while(1)
{
system("cls");
printf("\t\t****************** The query ********************\n");
printf("\t\t* *\n");
printf("\t\t* 1. Press the number to inquire *\n");
printf("\t\t* *\n");
printf("\t\t* 2. Search by name *\n");
printf("\t\t* *\n");
printf("\t\t* 3. Enquiry by Education Background *\n");
printf("\t\t* *\n");
printf("\t\t* 4. Enquiry by Job *\n");
printf("\t\t* *\n");
printf("\t\t* Enter any other key to exit this module *\n");
printf("\t\t******************************************\n");
printf("\t\t Please enter the instruction (1-4):");
scanf("%*c%c",&num);
if(num < '1' || num > '4')
{
printf(" Wrong instruction! \n\n");
system("pause");
continue;
}
system("cls");
flag = 0;// Used to mark the existence of employee information
if(num == '1')// Press the number to inquire
{
printf("\t\t Please enter the number of the employee you want to check: ");
scanf("%s",q_id);
for(i = 0 ; i < n ;i ++)
{
if( strcmp(work[i].ID,q_id) == 0)
{
output_inf(i);
flag = 1;// tag
break;
}
}
}
else if(num == '2')// Search by name
{
printf("\t\t Please enter the name of the employee you want to check: ");
scanf("%s",q_name);
for(i = 0 ; i < n ;i ++)
{
if( strcmp(work[i].name,q_name) == 0)
{
output_inf(i);
flag = 1;// tag
}
}
}
else if(num == '3')// Enquiry by Education Background
{
printf("\t\t Please enter the educational background of the employee you want to check: ");
scanf("%s",q_edu);
for(i = 0 ; i < n ;i ++)
{
if( strcmp(work[i].edu,q_edu) == 0)
{
output_inf(i);
flag = 1;// tag
}
}
}
else if(num == '4')// Enquiry by Job
{
printf("\t\t Please enter the position of the employee you want to check: ");
scanf("%s",q_position);
for(i = 0 ; i < n ;i ++)
{
if( strcmp(work[i].position,q_position) == 0)
{
output_inf(i);
flag = 1;// tag
}
}
}
if(!flag)// Determine if there is any information about the employee
{
printf("\n\n No information about the employee is available !\n\n");
}
printf("\n\n Whether to continue the query (Y/N):");
scanf("%*c%c",&c);
if(c == 'N' || c == 'n') break;
}
}
// Modify information module
void mod()// Modify employee information
{
char change_ID[20];// The number of the employee to be modified
int number;// The location of employee information in the data
char num;// instruction
char message[100];// Modified information
char c;// instruction Y?N
int flag;
int i;
read();
while(1)
{
flag = 0;
system("cls");
printf(" Please enter the number of the employee to be modified: ");
scanf("%s",change_ID);
for(i = 0 ; i < n ; i ++)
{
if( strcmp(work[i].ID,change_ID) == 0 )
{
number = i;
flag = 1;
break;
}
}
if(!flag)
{
printf("\n\n No such employee information!! \n\n");
printf("\n\n Whether to continue to modify (Y/N):");
scanf("%*c%c",&c);
if(c == 'N' || c == 'n') break;
continue;
}
printf("\n\n\t\t****************** Modify the ********************\n");
printf("\t\t* *\n");
printf("\t\t* 1. Modify the name *\n");
printf("\t\t* *\n");
printf("\t\t* 2. Modify the record of formal schooling *\n");
printf("\t\t* *\n");
printf("\t\t* 3. Modify the job *\n");
printf("\t\t* *\n");
printf("\t\t* 4. Modify the salary *\n");
printf("\t\t* *\n");
printf("\t\t* 5. Modify the address *\n");
printf("\t\t* *\n");
printf("\t\t* 6. Modify the phone *\n");
printf("\t\t* *\n");
printf("\t\t* Enter any other key to exit this module *\n");
printf("\t\t******************************************\n");
printf("\t\t Please enter the instruction (1-6):");
scanf("%*c%c",&num);
if(num < '1' || num > '6')
{
printf(" Wrong instruction! \n\n");
system("pause");
continue;
}
system("cls");
printf(" Please enter the modified information: ");
scanf("%s",message);
switch(num)
{
case '1' : strcpy(work[number].name,message); break;
case '2' : strcpy(work[number].edu,message); break;
case '3' : strcpy(work[number].position,message); break;
case '4' : strcpy(work[number].wage,message); break;
case '5' : strcpy(work[number].address,message); break;
case '6' : strcpy(work[number].tel,message); break;
}
system("cls");
printf("\n\n Whether to continue to modify (Y/N):");
scanf("%*c%c",&c);
if(c == 'N' || c == 'n') break;
}
write();
}
// Delete information module
void del()// Delete employee information
{
char delete_ID[20];// Delete employee number
int i,j;
int flag;// Mark if there is information about the employee
char c;
read();
while(1)
{
system("cls");
flag = 0;
printf(" Please enter the number of the employee to be deleted: ");
scanf("%s",delete_ID);
for(i = 0 ; i < n ; i ++)
{
if( strcmp(work[i].ID,delete_ID) == 0)
{
n --;
flag = 1;
for(j = i ; j < n ; j ++)
{
work[j] =work[j + 1];
}
break;
}
}
if(!flag) printf("\n\n No such employee information! \n\n");
else printf("\n\n Delete successful! \n");
printf("\n\n Whether to continue deletion (Y/N):");
scanf("%*c%c",&c);
if(c == 'N' || c == 'n') break;
}
write();
}
// Menu module
void menu()// The menu
{
printf("\t\t************ Staff information management system menu **********\n");
printf("\t\t* *\n");
printf("\t\t* 1. Input of employee information *\n");
printf("\t\t* *\n");
printf("\t\t* 2. Display employee information *\n");
printf("\t\t* *\n");
printf("\t\t* 3. Query employee information *\n");
printf("\t\t* *\n");
printf("\t\t* 4. Modify employee information *\n");
printf("\t\t* *\n");
printf("\t\t* 5. Delete employee information *\n");
printf("\t\t* *\n");
printf("\t\t* 0. exit *\n");
printf("\t\t* *\n");
printf("\t\t******************************************\n");
printf("\t\t Please enter the instruction (0-5): ");
}
int main()
{
int num;
n = 0;
system("color 0B");
while(1)
{
menu();
scanf("%d",&num);
system("cls");
switch(num)
{
case 1: input(); break;
case 2: show(); break;
case 3: que(); break;
case 4: mod(); break;
case 5: del(); break;
case 0: printf(" Thanks for using! \n\n"); return 0;
default :printf("\n---> Invalid instruction !\n\n\n");
}
system("pause");
system("cls");
}
}For more information, please pay attention to the topic management System Development.