Table of Contents
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C++ Program to Build Student Attendance Management System
#include<iostream>
#include<fstream>
#include<stdlib.h>
using namespace std;
class attend
{
float p=0,t=0,w;
public:
int enter();
void calculate();
};
int attend::enter()//update the attendance
{
int date,month,year;
int i,n,k,a,c;
int z[20];
cout<<">>ENTER ANY KEY TO GIVE THE DATE... "<<endl;
cin>>i;
while(i)
{
cout<<"->Enter DATE/MONTH/YEAR: "<<endl;
cin>>date>>month>>year;
cout<<endl;
if(month== 1||month==3||month==5||month==7||month==8||month==10||month==12)
{
if(date>31||date==0)
{
c=0;
}
else
{
c=1;
}
}
if(month== 4||month==6||month==9||month==11)
{
if(date>30 ||date==0)
{
c=0;
}
else
{
c=1;
}
}
if(month==2)
{
if(date>29||date==0)
{
c=0;
}
else
{
c=1;
}
}
if(month>12)
{
c=0;
}
if(month==0||year==0)
{
c=0;
}
switch(c)//gives if the given date is correct or not and update
{
case 0:cout<<"Please enter::VALID DATE::"<<endl<<endl;
break;
case 1:
cout<<">>ENTER NUMBER OF PERIODS IN THE DAY...(max periods=7): ";
cin>>n;
cout<<endl;
for(k=1;k<n+1;k++)
{
cout<<"->ENTER '1' IF PRESENT ELSE '0' TO UPDATE THE STATUS OF PERIOD "<<k<<" :";
cin>>a;
if(a==1)
{
p++;
t++;
z[k]=1;
cout<<" ......................................................................"<<endl<<endl;
cout<<" :::UPDATED AS PRESENT:::"<<endl<<endl;
cout<<" ......................................................................"<<endl<<endl;
}
else
{
t++;
z[k]=0;
cout<<" ......................................................................"<<endl<<endl;
cout<<" :::UPDATED AS ABSENT:::"<<endl<<endl;
cout<<" ......................................................................"<<endl<<endl;
}
}
cout<<endl;
cout<<" ::::::ATTENDANCE OF THE DAY IS UPDATED AS:::::"<<endl;
for(k=1;k<n+1;k++)
{
cout<<"__________";
}
cout<<endl<<endl;
cout<<"DD/MM/YY ";
for(k=1;k<n+1;k++)
{
cout<<"p"<<k<<" ";
}
cout<<endl<<endl;
cout<<date<<"/"<<month<<"/"<<year<<" ";
for(k=1;k<n+1;k++)
{
if(z[k]==1)
{
cout<<"P"<<" ";
}
else
{
cout<<"A"<<" ";
}
}
cout<<endl<<endl;
for(k=1;k<n+1;k++)
{
cout<<"__________";
}
cout<<endl;
cout<<endl;
break;
default://To exit
exit(0);
}
cout<<">>ENTER 1 TO TO UPDATE ANOTHER DAY ELSE 0 :";
cin>>i;
cout<<endl;
}
}
void attend::calculate()//calculate the percentage
{
int x,r;
float s;
x=(t*75)/100;
s=(p*100)/t;
if(s<75&&s>65)
{
cout<<" _________________________________________________________________________"<<endl<<endl;
cout<<" YOUR ATTENDANCE IS LOW : "<<s<<"%"<<endl<<endl;
r=x-p;
cout<<" ........................................................................."<<endl<<endl;
cout<<" you must have attended"<<r<<"classes "<<endl<<endl;
cout<<" _________________________________________________________________________"<<endl<<endl;
}
if(s<65)
{
int y;
y=(t*65)/100;
int k=y-p;
cout<<" __________________________________________________________________________"<<endl<<endl;
cout<<" YOUR ATTENDANCE IS : "<<s<<"%"<<endl<<endl;
cout<<" .........................................................................."<<endl<<endl;
cout<<" you must have attended"<<k<<"classes "<<endl;
cout<<" __________________________________________________________________________"<<endl<<endl;
}
if(s>75)
{
cout<<" __________________________________________________________________________"<<endl<<endl;
cout<<" YOUR ATTENDANCE IS :"<<s<<"%"<<endl<<endl;
cout<<" .........................................................................."<<endl<<endl;
cout<<" __________________________________________________________________________"<<endl<<endl;
}
}
int main()
{
attend o1,o2,o3;
int a,w;
ifstream file1;
ofstream file2;
cout<<endl;
cout<<" STUDENT ATTENDANCE MAINTAINANCE SYSTEM "<<endl;
cout<<" ------------------------------------------ "<<endl<<endl;
cout<<"::::::::::::::::::: ENTER ANY KEY TO SELECT OPTIONS :::::::::::::::::::"<<endl;
cin>>a;
cout<<endl;
while(a)
{
cout<<"******************************** OPTIONS **********************************"<<endl<<endl;//printing options
cout<<" 1.VIEW YOUR ATTENDANCE"<<endl<<endl<<" 2.UPDATE YOUR ATTENDANCE"<<endl<<endl;
cout<<"*******************************************************************************"<<endl;
cin>>w;
switch(w)//perform options
{
case 1:
file1.open("attendance1.txt");
file1.read((char *)& o1, sizeof(o1));
o1.calculate();
file1.close();
break;
case 2:
file1.open("attendance1.txt");
file1.read((char *)& o2, sizeof(o2));
file1.close();
o2.enter();
file2.open("attendance1.txt");
file2.write((char *)& o2, sizeof(o2));
file2.close();
break;
}
cout<<">>ENTER 1 TO CONTINUE ELSE 0"<<endl;
cin>>a;
}
return 0;
}Read Also: C++ Program to Build Bus Ticket Reservation Management System
Final Words
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