Student Database Grading System in C++

In this article I would like to share with you a database system that I wrote in C++ and my back end is binary file in C++ that has a function to add,edit, view and delete the record of the student. It has also a function to compute the student grades. 

I am currently accepting programming work, it project, school 

programming projects , thesis and capstone projects, IT consulting 

work, computer tutorials and web development work kindly contact me in the following email address for further details.  If you want to advertise in my website kindly contact me also in my email address also. Thank you.

My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is  +63 (034) 4335675.

Sample Program Output

Program Listing

student.cpp

// student.cpp
// Written By Mr. Jake R. Pomperada, BSCS, MAED-IT
// July 26, 2018  Thursday
// Bacolod City, Negros Occidental Philippines

#include <iostream>
#include <iomanip>
#include <cmath>
#include <stdlib.h>
#include <string.h>
#include <conio.h>
#include <ctype.h>

 using namespace std;


int main( )
{
FILE *fp, *ft ;
char another, choice ;
struct student
{
char stud_id_no[300];
char name[300];
char course[300];
char subject[300];
float prelim,midterm,endterm,final_grade;
} ;
struct student grade;
char student_id[300];
long int recsize;
    int flag=0;
fp = fopen ("GRADE_DB.DAT", "rb+" ) ;
if ( fp == NULL )
{
fp = fopen ( "GRADE_DB.DAT", "wb+" ) ;
if ( fp == NULL )
{
puts ( "Cannot open file" ) ;
exit(0) ;
}
}
recsize = sizeof ( grade ) ;
while ( 1 )
{
       system("CLS");
         setprecision(0);
        cout <<"\n";
cout << "\n============================================";
cout <<"\n";
cout <<"\n STUDENT GRADING DATABASE SYSTEM IN C++";
cout <<"\n";
cout << " Created By Mr. Jake R. Pomperada, MAED-IT";
cout <<"\n=============================================";
cout <<"\n\n";
cout << "1. INSERT STUDENT RECORD";
cout <<"\n";
cout << "2. BROWSE STUDENT RECORD";
cout <<"\n";
cout << "3. EDIT STUDENT RECORDS" ;
cout <<"\n";
cout  << "4. FIND STUDENT RECORDS";
cout <<"\n";
cout << "5. REMOVE STUDENT RECORDS";
cout <<"\n";
cout  << "6. QUIT PROGRAM" ;
cout <<"\n\n";
cout  <<"SELECT YOUR OPTION :=> ";
fflush (stdin) ;
choice = getche() ;
switch ( choice )
{
case '1' :
fseek ( fp, 0 , SEEK_END ) ;
another = 'Y' ;
while ( another == 'Y' )
{
system("cls");
cout <<"\n\n";
cout << "=== INSERT NEW STUDENT GRADE RECORD ===";
cout <<"\n\n";
cout <<"Enter Student ID Number : ";
                    cin >> grade.stud_id_no;
cout << "Enter Student Name: ";
fflush (stdin) ;
gets(grade.name);
cout <<"Enter Course : ";
fflush (stdin) ;
gets(grade.course);
                    cout <<"Enter Subject : ";
fflush (stdin) ;
gets(grade.subject);
cout <<"Enter Prelim Grade: ";
cin >> grade.prelim;
cout << "Enter Midtem Grade: ";
cin >> grade.midterm;
cout << "Enter Endterm Grade: ";
cin >> grade.endterm;
grade.final_grade = (grade.prelim * 0.30) + (grade.midterm * 0.30) + (grade.endterm * 0.40);
cout << "\n";
                    cout << "\n Student Final Grade : "  << round(grade.final_grade);
fwrite (&grade, recsize, 1, fp ) ;
cout << "\n\n";
cout  << "\nAdd New Student Record (Y/N) : " ;
fflush (stdin) ;
another = toupper(getche()) ;
}
break ;
case '2' :
        system("cls");
rewind ( fp );
cout << "\n\n";
                cout <<"=== VIEW STUDENT GRADE RECORD ===";
                cout <<"\n\n";
while ( fread ( &grade, recsize, 1, fp ) == 1 )
        {
       cout <<"\n";
       cout <<"\n  ID Number        : " <<grade.stud_id_no;
       cout <<"\n  Name             : " <<grade.name;
       cout <<"\n  Course           : " <<grade.course;
       cout <<"\n  Subject          : " << grade.subject;
       cout <<"\n  Prelim Grade     : " <<grade.prelim;
       cout <<"\n  Midterm Grade    : " <<grade.midterm;
       cout <<"\n  Endterm Grade    : " <<grade.endterm;
       cout <<"\n";
       grade.final_grade = (grade.prelim * 0.30) + (grade.midterm * 0.30) + (grade.endterm * 0.40);
       cout <<"\n Student Final Grade : " <<round(grade.final_grade);
  }
          cout <<"\n\n";
         system("pause");
break ;
case '3' :
another = 'Y' ;
while ( another == 'Y' )
{
system("cls");
          cout <<"=== EDIT STUDENT GRADE RECORD ===";
        cout <<"\n\n";
          cout <<"Enter Student ID Number : ";
                cin >> student_id;
    rewind ( fp ) ;
cout <<"\n";
while ( fread ( &grade, recsize, 1, fp ) == 1 )
{
if ( strcmp ( grade.stud_id_no, student_id) == 0 )
{
cout <<"Enter Student ID Number : ";
                            fflush (stdin) ;
                            gets(grade.stud_id_no);
cout <<"Enter Student Name : ";
fflush ( stdin ) ;
gets(grade.name);
        cout <<"Enter Course: ";
fflush ( stdin ) ;
gets(grade.course);
cout <<"Enter Subject : ";
fflush ( stdin ) ;
gets(grade.subject);
cout <<"Enter Prelim Grade : ";
cin >> grade.prelim;
cout <<"Enter Midtem Grade : ";
cin >> grade.midterm;
cout <<"Enter Endterm Grade: ";
cin >> grade.endterm;
cout <<"\n";
grade.final_grade = (grade.prelim * 0.20) + (grade.midterm * 0.30) + (grade.endterm * 0.50);
cout <<"\n Student Final Grade : " << round(grade.final_grade);
fseek ( fp, - recsize, SEEK_CUR ) ;
fwrite ( &grade, recsize, 1, fp ) ;
break ;
}
}
if (strcmp(grade.stud_id_no,student_id) != 0 )
                 {  
                   cout <<"\n\n";
                   cout <<"No Student Record in the Database.";
                   cout <<"\n";
                   system("pause");
                   break;
                   }
                 cout <<"\n\n";
     cout  <<"\nEdit Another Student Record (Y/N) : ";
fflush ( stdin ) ;
another = toupper(getche());
}
break ;
      case '4' :
   rewind ( fp ) ;
    another = 'Y' ;
while ( another == 'Y' )
{
system("cls");
        cout <<"=== Find Student Records ===";
        cout <<"\n\n";
     cout <<"Enter Student ID Number : ";
                 cin >>student_id;
cout <<"\n";
rewind ( fp ) ;
while ( fread ( &grade, recsize, 1, fp ) == 1 )
{
if ( strcmp (grade.stud_id_no,student_id) == 0 )
{
                    cout <<"\n";
cout <<"\n ID Number      : " <<grade.stud_id_no;
cout <<"\n Name           : " << grade.name;
cout <<"\n Course         :  " <<grade.course;
            cout <<"\n Subject        : " <<grade.subject;
                    cout <<"\n Prelim Grade   :  " <<grade.prelim;
                   cout <<"\n  Midterm Grade  :  " <<grade.midterm;
                   cout <<"\n  Endterm Grade  : " << grade.endterm;
                   cout <<"\n";
       grade.final_grade = (grade.prelim * 0.30) + (grade.midterm * 0.30) + (grade.endterm * 0.40);
       cout <<"\n Student Final Grade : " << round(grade.final_grade);
       cout <<"\n\n";
       system("pause");
       break;
}
}
      if (strcmp(grade.stud_id_no,student_id) != 0 )
          {
            cout <<"\n\n";
            cout <<"No Student Record found in the Database.";
            cout <<"\n";
            system("pause");
            break;
           }
                    cout  <<"\n\n";
cout  <<"\n Find Another Student Record (Y/N) : " ;
fflush ( stdin ) ;
another = toupper(getche());
}
break ;
case '5' :
another = 'Y' ;
while ( another == 'Y' )
{
system("cls");
                    cout <<"=== REMOVE STUDENT GRADE RECORD ===";
                    cout <<"\n\n";
cout <<"Enter Student ID Number : ";
                    cin >> student_id;
cout <<"\n";
ft = fopen ( "TEMP.DAT", "wb" ) ;
rewind ( fp ) ;
while ( fread ( &grade, recsize, 1, fp ) == 1 )
{
if ( strcmp (grade.stud_id_no, student_id) != 0 )
fwrite ( &grade, recsize, 1, ft ) ;
                 else
                flag=1;
                  }
fclose ( fp ) ;
fclose ( ft ) ;
remove ( "GRADE_DB.DAT" ) ;
rename ( "TEMP.DAT", "GRADE_DB.DAT" ) ;
    fp = fopen ( "GRADE_DB.DAT", "rb+" ) ;
       if(flag==1) {
         cout <<"\n\n";
         cout <<"Record Successfully Deleted From the Database.";
         cout <<"\n";
         system("pause");
         }
else if (flag!=1) {
             cout <<"\n\n";
             cout <<"Record Not Found in the Database.";
             cout <<"\n";
            system("pause");
             }
                    cout <<"\n\n";
cout << "Remove Another Student Record (Y/N) : " ;
fflush (stdin) ;
another = toupper(getche());
}
break ;
case '6' :
fclose ( fp ) ;
cout <<"\n\n";
cout <<"END OF PROGRAM";
cout <<"\n\n";
cout << "Thank You Very Much For Using This Software.";
cout <<"\n\n";
system("PAUSE");
exit(0);
}
}

}

Largest and Smallest Number Determiner in C++

In this article I would like to share the work of my student named Arjay Lucernas Vicente we ask permission to him if we can share his work in our website which he agrees to help also other programmers around the world. This program will ask the user to give three numbers and then the program will determine which of the three numbers given is the highest and smallest in terms of values using C++. I would like to thank Arjay for sharing his work to us.

I am currently accepting programming work, it project, school 

programming projects , thesis and capstone projects, IT consulting 

work, computer tutorials and web development work kindly contact me in the following email address for further details.  If you want to advertise in my website kindly contact me also in my email address also. Thank you.

My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is  +63 (034) 4335675.

Program Listing

number.cpp


/* Arjay Lucernas Vicente */
/* July 23, 2018 */

#include <iostream>
#include <stdlib.h>

using namespace std;
int main()
{

 int a, b, c;
    int smallest, largest; 
    cout << "Please enter 3 numbers: " ;
    
    cout<<"ikauna nga numero ";
    cin>> a;
    cout<<"\n\n";
    cout<<"ikaduwa nga numero ";
    cin>> b;
    cout<<"\n\n";                                                                                 
    cout<<"ikatatlo numero ";
    cin>> c;
    cout<<"\n\n";  
    

    smallest = a;
    largest = a;

    if (b > largest) 
            largest = b;
    if (c > largest)
            largest = c;
    if (b < smallest)
            smallest = b;
    if (c < smallest)
            smallest = c;

    cout << "largest: " << largest;
    cout << "\n\n";
cout << "smallest: "<< smallest << endl;
cout <<"\n\n\n";
const int SIZE = 11;
    for (int i = 0; i<SIZE; i++)
    {
        std::cout << (((1 + (i * 2)) < SIZE) ? std::string((SIZE / 2 - (1 + (i * 2)) / 2), ' ') : std::string((SIZE / 2 - (SIZE * 2 - (1 + (i * 2))) / 2), ' ')) << (((1 + (i * 2)) < SIZE) ? std::string((1 + (i * 2)), '*') : std::string(SIZE * 2 - (1 + (i * 2)), '*')) << endl;
    }
 
    printf("powered by: ARJAY VICENTE");
}

Swap Two Numbers in C Using Pointers

In this article I would like to share with you a sample program that will swap the two numbers using Pointers in C.

I am currently accepting programming work, it project, school 

programming projects , thesis and capstone projects, IT consulting 

work, computer tutorials and web development work kindly contact me in the following email address for further details.  If you want to advertise in my website kindly contact me also in my email address also. Thank you.

My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is  +63 (034) 4335675.

Program Listing

swap.c

 #include <stdio.h> 

 

 int swap(int *x, int *y, int t); 

 

 main { 

 int x=0,y=0,t=0; 

 x=20; y=30; t=40; 

 printf(“\n The original value of x: %d”,x); 

 printf(“\n The original value of y: %d”,y); 

 printf(“\n The original value of t: %d”,t); 

 printf(“\nTheir values after calling the function and”); 

 swap(&x,&y,t);

 printf(“\ntheir effect when passed by reference/pointers”); 

 printf(“\n x+1 = %d”,x+1); 

 printf(“\n y+1 = %d”,y+1);

 printf(“\n t+1 = %d”,t+1); 

 getch(); 

 }  

  int swap(int *x, int *y, int t) 

  { 

  t = *x; 

  *x = *y; 

  *y = t;

  } 

Area of the Circle Solver in C

In this article I would like to share with you a simple program to solve the are of the circle using C language.

I am currently accepting programming work, it project, school 

programming projects , thesis and capstone projects, IT consulting 

work, computer tutorials and web development work kindly contact me in the following email address for further details.  If you want to advertise in my website kindly contact me also in my email address also. Thank you.

My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is  +63 (034) 4335675.

Program Listing

circle.c

#include <stdio.h> 

#define Pi 3.1416 

main() {  

 int r;   

 float A; 

 printf(“\n Enter the radius:”); 

 scanf(“%d”,&r); A=Pi*r*r; 

 printf(“\n The area:%f”,A); 

 return 0;

 }   

Sum of Two Number in C

A very simple program to ask the user to give two numbers and then our program will compute the sum of the two numbers using C language.

I am currently accepting programming work, it project, school 

programming projects , thesis and capstone projects, IT consulting 

work, computer tutorials and web development work kindly contact me in the following email address for further details.  If you want to advertise in my website kindly contact me also in my email address also. Thank you.

My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is  +63 (034) 4335675.

Program Listing.

sum.c

#include <stdio.h> 

main()

 {    

 int sum, n1,n2;     

 printf(“\n Enter two nos.”);   

 scanf(“%d%d”,&n1,&n2);   

 sum=n1+n2;  

 printf(“\n The sum: %d”,sum);  

return 0;

}   

Creates random numbers in a given file in C

In this sample program it will create a random numbers in a given file in C.

I am currently accepting programming work, it project, school 

programming projects , thesis and capstone projects, IT consulting 

work, computer tutorials and web development work kindly contact me in the following email address for further details.  If you want to advertise in my website kindly contact me also in my email address also. Thank you.

My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is  +63 (034) 4335675.

Program Listing

random.c

#include <stdio.h>

#include <conio.h>

#include <stdlib.h>

void main( )

{

FILE *fp ;

char str [ 67 ] ;

int i, noofr, j ;

clrscr( ) ;

printf ( "Enter file name: " ) ;

scanf ( "%s", str ) ;

printf ( "Enter number of records: " ) ;

scanf ( "%d", &noofr ) ;

fp = fopen ( str, "wb" ) ;

if ( fp == NULL )

{

printf ( "Unable to create file." ) ;

getch( ) ;

exit ( 0 ) ;

}

randomize( ) ;

for ( i = 0 ; i < noofr ; i++ )

{

j = random ( 1000 ) ;

fwrite ( &j, sizeof ( int ), 1, fp ) ;

printf ( "%d\t", j ) ;

}

fclose ( fp ) ;

printf ( "\nFile is created. \nPress any key to continue." ) ;

getch( ) ;

}

Linear search in a unsorted array in C

Here is a simple program in C that I would like to share with you guys a linear search in a unsorted array. The code is very simple and shows how to use C language in Linear Searching.

I am currently accepting programming work, it project, school 

programming projects , thesis and capstone projects, IT consulting 

work, computer tutorials and web development work kindly contact me in the following email address for further details.  If you want to advertise in my website kindly contact me also in my email address also. Thank you.

My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is  +63 (034) 4335675.

Program Listing

linear.c

#include <stdio.h>

#include <conio.h>

void main( )

{

int arr[10] = { 11, 2, 9, 13, 57, 25, 17, 1, 90, 3 } ;

int i, num ;

clrscr( ) ;

printf ( "Enter number to search: " ) ;

scanf ( "%d", &num ) ;

for ( i = 0 ; i <= 9 ; i++ )

{

if ( arr[i] == num )

break ;

}

if ( i == 10 )

printf ( "Number is not present in the array." ) ;

else

printf ( "The number is at position %d in the array.", i ) ;

getch( ) ;

}

Linear search in a sorted array in C

Here is a simple program in C that I would like to share with you guys a linear search in a sorted array. The code is very simple and shows how to use C language in Linear Searching.

I am currently accepting programming work, it project, school 

programming projects , thesis and capstone projects, IT consulting 

work, computer tutorials and web development work kindly contact me in the following email address for further details.  If you want to advertise in my website kindly contact me also in my email address also. Thank you.

My email address are the following jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

My mobile number here in the Philippines is 09173084360.

My telephone number at home here in Bacolod City, Negros Occidental Philippines is  +63 (034) 4335675.

Program Listing

linear.c

include <stdio.h>

#include <conio.h>

void main( )

{

int arr[10] = { 1, 2, 3, 9, 11, 13, 17, 25, 57, 90 } ;

int i, num ;

clrscr( ) ;

printf ( "Enter number to search: " ) ;

scanf ( "%d", &num ) ;

for ( i = 0 ; i <= 9 ; i++ )

{

if ( arr[9] < num || arr[i] >= num )

{

if ( arr[i] == num )

printf ( "The number is at position %d in the array.", i ) ;

else

printf ( "Number is not present in the array." ) ;

break ;

}

}

getch( ) ;

}