1.Student reportcard system in C++:
Source code:
#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<process.h>
#include<fstream.h>
#include<iomanip.h>
// CLASS USED IN PROJECT
class student
{
int rno;
char name[50],dept[10];
char s1[50],s2[50],s3[50],s4[50],s5[50],s6[50];
float per;
char grade;
int s1_marks,s2_marks,s3_marks,s4_marks,s5_marks,s6_marks;
void calculate()
{
per=(s1_marks+s2_marks+s3_marks+s4_marks+s5_marks+s6_marks)/6.0;
if(per>=91 && per<=100)
grade='S';
else if(per>=81 && per<=90)
grade='A';
else if(per>=71 && per<=80)
grade='B';
else if(per>=61 && per<=70)
grade='C';
else if(per>=55 && per<=60)
grade='D';
else if(per>=50 && per<=54)
grade='E';
else
grade='U';
}
public:
void getdata()
{
cout<<"\n Enter your Department";
cin>>dept;
cout<<"\nEnter The roll number of student ";
cin>>rno;
cout<<"\n\nEnter The Name of student ";
gets(name);
cout<<"\n enter your subjects one by one";
cin>>s1;
cout<<"\n";
cin>>s2;
cout<<"\n";
cin>>s3;
cout<<"\n";
cin>>s4;
cout<<"\n";
cin>>s5;
cout<<"\n";
cin>>s6;
cout<<"\n";
cout<<"Enter your marks in "<<s1;
cin>>s1_marks;
cout<<"Enter your marks in "<<s2;
cin>>s2_marks;
cout<<"Enter your marks in "<<s3;
cin>>s3_marks;
cout<<"Enter your marks in "<<s4;
cin>>s4_marks;
cout<<"Enter your marks in "<<s5;
cin>>s5_marks;
cout<<"Enter your marks in "<<s6;
cin>>s6_marks;
calculate();
}
void showdata()
{
cout<<"\nRoll number of student : "<<rno;
cout<<"\nName of student :"<<name;
cout<<"\nMarks in "<<s1<<" "<<s1_marks;
cout<<"\nMarks in "<<s2<<" "<<s2_marks;
cout<<"\nMarks in "<<s3<<" "<<s3_marks;
cout<<"\nMarks in "<<s4<<" "<<s4_marks;
cout<<"\nMarks in "<<s5<<" "<<s5_marks;
cout<<"\nMarks in "<<s6<<" "<<s6_marks;
cout<<"\nPercentage of student is :\t"<<setprecision(2)<<per;
cout<<"\nGrade of student is : "<<grade;
}
void show_tabular()
{
cout<<rno<<"\t "<<name<<"\t "<<s1_marks<<" \t "<<s2_marks<<"\t"
<<s3_marks<<" "<<s4_marks<<" "<<s5_marks<<" "<<s6_marks<<" "<<setprecision(1)<<per<<" "<<grade<<endl;
}
int retrno()
{ return rno; }
}; //class ends herE
fstream fp;
student st;
// function to write in file
void write_student()
{
fp.open("student.dat",ios::out|ios::app);
st.getdata();
fp.write((char*)&st,sizeof(student));
fp.close();
cout<<"\n\nstudent record Has Been Created ";
getch();
}
// function to read all records from file
void display_all()
{
clrscr();
cout<<"\n\n\n\t\tDISPLAY ALL RECORD !!!\n\n";
fp.open("student.dat",ios::in);
while(fp.read((char*)&st,sizeof(student)))
{
st.showdata();
cout<<"\n\n====================================\n";
getch();
}
fp.close();
getch();
}
// function to read specific record from file
void display_sp(int n)
{
int flag=0;
fp.open("student.dat",ios::in);
while(fp.read((char*)&st,sizeof(student)))
{
if(st.retrno()==n)
{
clrscr();
st.showdata();
flag=1;
}
}
fp.close();
if(flag==0)
cout<<"\n\nrecord not exist";
getch();
}
// function to modify record of file
void modify_student()
{
int no,found=0;
clrscr();
cout<<"\n\n\tTo Modify ";
cout<<"\n\n\tPlease Enter the roll number of student";
cin>>no;
fp.open("student.dat",ios::in|ios::out);
while(fp.read((char*)&st,sizeof(student)) && found==0)
{
if(st.retrno()==no)
{
st.showdata();
cout<<"\nPlease Enter The New Details of student"<<endl;
st.getdata();
int pos=-1*sizeof(st);
fp.seekp(pos,ios::cur);
fp.write((char*)&st,sizeof(student));
cout<<"\n\n\t Record Updated";
found=1;
}
}
fp.close();
if(found==0)
cout<<"\n\n Record Not Found ";
getch();
}
// function to delete record of file
void delete_student()
{
int no;
clrscr();
cout<<"\n\n\n\tDelete Record";
cout<<"\n\nPlease Enter The roll number of student You Want To Delete";
cin>>no;
fp.open("student.dat",ios::in|ios::out);
fstream fp2;
fp2.open("Temp.dat",ios::out);
fp.seekg(0,ios::beg);
while(fp.read((char*)&st,sizeof(student)))
{
if(st.retrno()!=no)
{
fp2.write((char*)&st,sizeof(student));
}
}
fp2.close();
fp.close();
remove("student.dat");
rename("Temp.dat","student.dat");
cout<<"\n\n\tRecord Deleted ..";
getch();
}
// function to display all students grade report
void class_result()
{
clrscr();
fp.open("student.dat",ios::in);
if(!fp)
{
cout<<"ERROR!!! FILE COULD NOT BE OPEN\n\n\n Go To Entry Menu to create File";
cout<<"\n\n\n Program is closing ";
getch();
exit(0);
}
cout<<"\n\n\t\t\t\tALL STUDENTS RESULT \n\n";
cout<<"===========================================================================\n";
cout<<"Roll No. Name S1 S2 S3 S4 S5 S6 % Grade\n";
cout<<"===========================================================================\n";
while(fp.read((char*)&st,sizeof(student)))
{
st.show_tabular();
}
fp.close();
getch();
}
// function to display result menu
void result()
{
int ans,rno;
char ch;
clrscr();
cout<<"\n\n\nRESULT MENU";
cout<<"\n\n\n1. Class Result\n\n2. Student Report Card\n\n3. Back to Main Menu";
cout<<"\n\n\nEnter Choice (1/2)? ";
cin>>ans;
switch(ans)
{
case 1 : class_result();break;
case 2 : {
do{
clrscr();
char ans;
cout<<"\n\nEnter Roll Number Of Student : ";
cin>>rno;
display_sp(rno);
cout<<"\n\nDo you want to See More Result (y/n)?";
cin>>ans;
}while(ans=='y'||ans=='Y');
break;
}
case 3: break;
default: cout<<"\a";
}
}
// INTRODUCTION FUNCTION
void intro()
{
clrscr();
cout<<"\n\n\n\n\n\n\n\n\n";
cout<<"\t\t\tSTUDENT";
cout<<"\tREPORT CARD";
cout<<" PROJECT ";
cout<<"\n\n";
cout<<"\t\t\t\tDEVELOPED BY\n";
cout<<"\n";
cout<<"\t\t\tYour Name";
getch();
}
// ENTRY / EDIT MENU FUNCTION
void entry_menu()
{
clrscr();
char ch2;
cout<<"\n\n\n\tENTRY MENU";
cout<<"\n\n\t1.CREATE STUDENT RECORD";
cout<<"\n\n\t2.DISPLAY ALL STUDENTS RECORDS";
cout<<"\n\n\t3.SEARCH STUDENT RECORD ";
cout<<"\n\n\t4.MODIFY STUDENT RECORD";
cout<<"\n\n\t5.DELETE STUDENT RECORD";
cout<<"\n\n\t6.BACK TO MAIN MENU";
cout<<"\n\n\tPlease Enter Your Choice (1-6) ";
ch2=getch();
switch(ch2)
{
case '1': clrscr();
write_student();
break;
case '2': display_all();break;
case '3':
int num;
clrscr();
cout<<"\n\n\tPlease Enter The roll number ";
cin>>num;
display_sp(num);
break;
case '4': modify_student();break;
case '5': delete_student();break;
case '6': break;
default:cout<<"\a";entry_menu();
}
}
// THE MAIN FUNCTION OF PROGRAM
void main()
{
char ch;
clrscr();
intro();
do
{
clrscr();
cout<<"\n\n\n\tMAIN MENU";
cout<<"\n\n\t01. RESULT MENU";
cout<<"\n\n\t02. ENTRY/EDIT MENU";
cout<<"\n\n\t03. EXIT";
cout<<"\n\n\tPlease Select Your Option (1-3) ";
ch=getch();
switch(ch)
{
case '1':
clrscr();
result();
break;
case '2': entry_menu();
break;
case '3':exit(0);
default :cout<<"\a";
}
}while(ch!='3');
}
