struct.cpp

一个人事管理的小程序

#include<iostream.h>
#include<fstream.h>
#include<iomanip.h>//include head file
int Initial(struct employee worker[],int x);
void Output(struct employee worker[],int m);
void Statistic(struct employee worker[],int count);
void Sort(struct employee worker[],int count);
int Console(struct employee worker[100],int temp);
int Input(struct employee worker[],int temp);
void Lookup(struct employee worker[],int temp);
int Delete(struct employee worker[],int temp);
void Modify(struct employee worker[],int temp);
int get_index(struct employee worker[],int number,int temp);
void rewrite(struct employee worker[],int index);
int Insert(struct employee worker[],int temp);
void display(struct employee worker[],int temp);
int wrong(struct employee worker[],int temp,int number);
struct employee
	{
		char shop[20];
		int num;
		char name[8];
		float base_salary;
		float post_salary;
		float bonus;
		float deal_salary;
		float fund;
		float tax;
		float fac_salary;
	}worker[100];//define struct array,allocate 100 space
int n=0;//define global variable
void main()
{
	int temp;//temp stores the current total number of available data 
	fstream infile;
	fstream outfile;
	infile.open("input.txt",ios::in);
	outfile.open("output.txt",ios::out);//define infile and outfile 
	temp=Initial(worker,n);//set the initial status and get the initial total number
	Statistic(worker,temp);//compute the items
	temp=Console(worker,temp);//invoke the main window and return the current total number
	Output(worker,temp);//output the data to the output file
}
int Initial(struct employee worker[100],int x)//read the information from the input file
{
	fstream infile;
	fstream outfile;
	infile.open("input.txt",ios::in);
	outfile.open("output.txt",ios::out);
	while(!infile.eof())
	{
	    infile>>worker[x].shop;
	    infile>>worker[x].num;
		infile>>worker[x].name;
		infile>>worker[x].base_salary;
		infile>>worker[x].post_salary;
		infile>>worker[x].bonus;
		x++;
	}//read the date information one by one
	Statistic(worker,x-1);
	Sort(worker,x-1);
	return x-1;
}
void Output(struct employee worker[100],int m)//output the data information to the output file
{
	fstream infile;
	fstream outfile;
	infile.open("input.txt",ios::in);
	outfile.open("output.txt",ios::out);
	int i;
	for(i=0;i<m;i++)
	{
		outfile<<setw(20)<<setiosflags(ios::left)<<worker[i].shop;
        outfile<<setw(10)<<worker[i].num;
		outfile<<setw(10)<<worker[i].name;
		outfile<<setw(10)<<worker[i].base_salary;
		outfile<<setw(10)<<worker[i].post_salary;
		outfile<<setw(10)<<worker[i].bonus;
		outfile<<setw(10)<<worker[i].deal_salary;
		outfile<<setw(10)<<worker[i].fund;
		outfile<<setw(10)<<worker[i].tax;
		outfile<<setw(10)<<worker[i].fac_salary<<endl;
	}
}
void Statistic(struct employee worker[100],int count)//compute the other data according to the famula
{
	int i;
	for(i=0;i<count;i++)
	{
		worker[i].deal_salary=worker[i].base_salary+worker[i].bonus+worker[i].post_salary;
		worker[i].fund=worker[i].base_salary*0.1;
		worker[i].tax=(worker[i].deal_salary-1000)*0.05;
		worker[i].fac_salary=worker[i].deal_salary-worker[i].fund-worker[i].tax;
	}
}
void Sort(struct employee worker[100],int count)
{
	employee temp;
	int i,j,k;
	for(i=0;i<count-1;i++)
	{
		k=i;
		for(j=i+1;j<=count-1;j++)
		{
			if(worker[j].fac_salary<worker[k].fac_salary)
				k=j;
		}//put the smallest index into k
			if(k!=i)//exchange the two data
			{
				temp=worker[i];
				worker[i]=worker[k];
				worker[k]=temp;
			}
	}
}
int Console(struct employee worker[100],int temp)//the main window console function
{
	char a;
	cout<<"*******************************************************************************"<<endl;
	cout<<"*              WELCOME TO EMPLOYER ADMINISTRATING SYSTEM                      *"<<endl;
	cout<<"*                                                        achieved using struct*"<<endl;
	cout<<"*                                                           zhangyu 9.16.2004 *"<<endl;
	cout<<"*******************************************************************************"<<endl;//output welcome information
	cout<<"Input(i) Lookup(l) Delete(d) Insert(n) Modify(m) Display(p) quit(q)"<<endl;
	cin>>a;//give tips and input the character to select function
	if(a=='q')
		cout<<"You have terminate the program!"<<"Welcome back next time!"<<endl;
	else
	{
	switch(a)
	{
		case 'p':
		{
			cout<<"You have chosen to display records!"<<endl;
			Statistic(worker,temp);
			Sort(worker,temp);
			display(worker,temp);
			temp=Console(worker,temp);
		}
		break;
	case 'i':
		{
			cout<<"You have chosen to input records!"<<endl;
			temp=Input(worker,temp);
			temp=Console(worker,temp);//return the current count and reinvoke the Console function
		}
		break;
	case 'l':
		{
			cout<<"You have chosen to lookup records!"<<endl;
			Lookup(worker,temp);
			temp=Console(worker,temp);
		}
		break;
	case 'd':
		{
			cout<<"You have chosen to delete records!"<<endl;
			temp=Delete(worker,temp);
			temp=Console(worker,temp);
		}
		break;
	case 'n':
		{
			cout<<"You have chosen to insert records!"<<endl;
			temp=Insert(worker,temp);
			temp=Console(worker,temp);
		}
		break;
	case 'm':
		{
			cout<<"You have chosen to modify records!"<<endl;
			Modify(worker,temp);
			temp=Console(worker,temp);
		}
		break;
	default:
		{
			cout<<"you have input the wrong letter,please check and try again!"<<endl;
			temp=Console(worker,temp);
		}
		break;
	}
	}
    return temp;//return the current count to the main function
}
int Input(struct employee worker[100],int temp)
{
	int number,i;
	cout<<"How many workers's records do you want to input?"<<endl;
	cin>>number;//set the total count
	cout<<"You can input the new data now:"<<endl;
	cout<<"(Example:soft 20040001 zhang 2000 1000 800)"<<endl;
    for(i=temp;i<temp+number;i++)
	{
		cin>>worker[i].shop;
	    cin>>worker[i].num;
		cin>>worker[i].name;
		cin>>worker[i].base_salary;
		cin>>worker[i].post_salary;
		cin>>worker[i].bonus;
	}
	temp=temp+number;//current total is adding temp and number
	Statistic(worker,temp);
	Sort(worker,temp);
		return temp;
}
void Lookup(struct employee worker[],int temp)
{
	int number,i;
	cout<<"Please input the number you want to lookup:"<<endl;
	cin>>number;
	if(wrong(worker,temp,number)==1)
		cout<<"Sorry we don't have this employee!"<<endl;
	else
	{
	for(i=0;i<temp;i++)
	{
		if(number==worker[i].num)
		{
		cout<<setw(10)<<setiosflags(ios::left)<<worker[i].shop;//set the field width
        cout<<setw(10)<<worker[i].num;
		cout<<setw(8)<<worker[i].name;
		cout<<setw(6)<<worker[i].base_salary;
		cout<<setw(6)<<worker[i].post_salary;
		cout<<setw(6)<<worker[i].bonus;
		cout<<setw(6)<<worker[i].deal_salary;
		cout<<setw(6)<<worker[i].fund;
		cout<<setw(6)<<worker[i].tax;
		cout<<setw(6)<<worker[i].fac_salary<<endl;
		break;
		}
	}
	}
}
int Delete(struct employee worker[100],int temp)
{
	int number,i,j=0;
	cout<<"Please input the number of the person who is the one you want to delete!"<<endl;
	cin>>number;
	if(wrong(worker,temp,number)==1)
		cout<<"Sorry we don't have this employee!"<<endl;
	else
	{
	Sort(worker,temp);
	if(number==worker[temp-1].num)
		temp=temp-1;//if the node is the final node,change the temp directly
	else//move the following data to the current data one by one
	{
		for(i=0;i<temp;i++)
		{
			if(worker[i].num==number)
			{
				j=i;//store the index of the node to be deleted
				break;
			}
		}
		for(i=j+1;i<temp;i++)
		{
			worker[i-1]=worker[i];
		}//move the following data to the current data one by one
		temp=temp-1;//decrease the temp 
	}
	cout<<"number "<<number<<" worker's record has been deleted!"<<endl;
	cout<<"Now the temp is:"<<temp<<endl;
	}
	return temp;//return the current temp 
}
int get_index(struct employee worker[],int number,int temp)//get the index of the assigned number
{
	int i,j;
	for(i=0;i<temp;i++)
	{
		if(worker[i].num==number)
		{
			j=i;
			break;
		}
	}
	return j;
}
void Modify(struct employee worker[100],int temp)//modify the data,permit user selection
{
	int number,index;
	cout<<"Please input number of the worker you want to modify(Example:20040001)"<<endl;
	cin>>number;
	if(wrong(worker,temp,number)==1)
		cout<<"Sorry we don't have this employee!"<<endl;
	else
	{
	index=get_index(worker,number,temp);
	rewrite(worker,index);//invoke the rewrite sub program
	Statistic(worker,temp);
	Sort(worker,temp);
	}
}
void rewrite(struct employee worker[100],int index)
{
	char a;
	cout<<"shop(s) name(n) base_salary(b) post_salary(p) bonus(o) quit(q)"<<endl;
	cout<<"Press one letter among these items to choose the corresponging function:"<<endl;
	cin>>a;
	if(a=='q')
		cout<<"You have modified all the data successfully!"<<endl;
    else
		switch(a)//select respective function
	{
		case 's':
			{
				cout<<"you have chosen to modify the shop item"<<endl;
				cout<<"The previous data is: "<<worker[index].shop<<endl;
				cout<<"Please input the new data:"<<endl;
				cin>>worker[index].shop;
				cout<<"The current data is: "<<worker[index].shop<<endl;
				rewrite(worker,index);
			}
			break;
        case 'n':
			{
				cout<<"you have chosen to modify the name item"<<endl;
				cout<<"The previous data is: "<<worker[index].name<<endl;
				cout<<"Please input the new data:"<<endl;
				cin>>worker[index].name;
				cout<<"The current data is: "<<worker[index].name<<endl;
				rewrite(worker,index);//revoke the rewrite function
			}
			break;
        case 'b':
			{
				cout<<"you have chosen to modify the base_salary item"<<endl;
				cout<<"The previous data is: "<<worker[index].base_salary<<endl;
				cout<<"Please input the new data:"<<endl;
				cin>>worker[index].base_salary;
				cout<<"The current data is: "<<worker[index].base_salary<<endl;
				rewrite(worker,index);
			}
			break;
        case 'p':
			{
				cout<<"you have chosen to modify the post_salary item"<<endl;
				cout<<"The previous data is: "<<worker[index].post_salary<<endl;
				cout<<"Please input the new data:"<<endl;
				cin>>worker[index].post_salary;
				cout<<"The current data is: "<<worker[index].post_salary<<endl;
				rewrite(worker,index);
			}
			break;
	    case 'o':
			{
				cout<<"you have chosen to modify the bonus item"<<endl;
				cout<<"The previous data is: "<<worker[index].bonus<<endl;
				cout<<"Please input the new data:"<<endl;
				cin>>worker[index].bonus;
				cout<<"The current data is: "<<worker[index].bonus<<endl;
				rewrite(worker,index);
			}
			break;
        default:
			{
				cout<<"you have input the wrong letter,please check and try again!"<<endl;
				rewrite(worker,index);
			}
			break;//if the input letter is not included in the lettr above,give wrong message
	}
}
int Insert(struct employee worker[100],int temp)
{
	int i,amount;
	cout<<"Please input the amount you want to insert:"<<endl;
	cin>>amount;//give the amount number you want to insert
	cout<<"Input data:"<<endl;
	for(i=temp;i<(temp+amount);i++)//insert the data after the whole information
	{
		cin>>worker[i].shop;
	    cin>>worker[i].num;
		cin>>worker[i].name;
		cin>>worker[i].base_salary;
		cin>>worker[i].post_salary;
		cin>>worker[i].bonus;
	}
	temp=temp+amount;
	Statistic(worker,temp);//compute the rest items
	Sort(worker,temp);//sort the whole table
	cout<<"The new record has been inserted successfully!"<<endl;
	return temp;
}
void display(struct employee worker[100],int temp)//display the record onto the screen
{
	cout<<"There are "<<temp<<"records in the list."<<endl;
	int i;
	for(i=0;i<temp;i++)//temp is the total amount
	{
		cout<<setw(15)<<setiosflags(ios::left)<<worker[i].shop;
        cout<<setw(10)<<worker[i].num;
		cout<<setw(8)<<worker[i].name;
		cout<<setw(6)<<worker[i].base_salary;
		cout<<setw(6)<<worker[i].post_salary;
		cout<<setw(6)<<worker[i].bonus;
		cout<<setw(6)<<worker[i].deal_salary;
		cout<<setw(6)<<worker[i].fund;
		cout<<setw(6)<<worker[i].tax;
		cout<<setw(6)<<worker[i].fac_salary<<endl;
	}
}
int wrong(struct employee worker[100],int temp,int number)
{
	int i=0;
	for(i=0;i<temp;i++)
	{
		if(worker[i].num==number)
			break;
	}
	if(i==temp)
		return 1;
	else return 0;
}