How to change conio.h?

[itishanikas]

/* The use of arrays (in class / in the main program).
Arrays in the main program is also known as an object array. */

#include <iostream>
#include <cstring>
#include <conio.h> //How to change conio.h?
using namespace std;

class STUDENT
{
private:
char name[30][35]; // 30 long names; each names is 35 letters
//char-type; 2-D array
long kpitm[30];
int bhgn[30];
double cgpa[30], cgpaMin, cgpaMax ;
public:
void setData( );
void CalTotalCGPA( );
void CalBilAvg( );
void cgpaMin( );
void cgpaMax( );
void displayData( );
};

void STUDENT :: setData( )
{
for (int bil = 0; bil < 30; bil++)
{
cout << “\n Fill-in student’s name:”;
cin >> ws;
cin.getline(name[bil], 34);
cout << “\n Fill-in kpitm number:”;
cin >> kpitm[bil];
cout << “\n Fill-in section:”;
cin >> bhgn[bil];
cout << “\n Fill-in CGPA :”;
cin >> cgpa[bil];
}
}

void STUDENT :: CalTotalCGPA( )
{
double totalcgpa = 0;
for (int bil = 0; bil < 30; bil++)
{
totalcgpa = totalcgpa + cgpa[bil];
}
average = totalcgpa/30;
}

void STUDENT :: CalBilAvg( )
{
int bilpelajar = 0;
for (int bil = 0; bil < 30; bil++)
{
if (cgpa[bil] > average)
bilpelajar++;
}
}

void STUDENT :: cgpaMin( )
{
double cgpaMin = cgpa[0]; //cgpaMin = 9999
for (int bil = 1; bil < 30; bil++)
{
if (cgpa[bil] < cgpaMin)
cgpaMin = cgpa[bil];
else
cgpaMin = cgpaMin;
}
}

void STUDENT :: cgpaMax( )
{
double cgpaMak = cgpa[0];//cgpaMax = -9999
for (int bil = 1; bil < 30; bil++)
{
if ( cgpa[bil] > cgpaMax)
cgpaMax = cgpa[bil];
else
cgpaMax = cgpaMax;
}
}

void STUDENT :: displayData( )
{
cout << “Name StudentNo Section CGPA” << endl;
for ( int bil = 0; bil < 30;bil++)
{
cout << name[bil] << “\t\t\t” << kpitm[bil] << “\t\t” << bhgn[bil] << “\t\t” << cgpa[bil] << endl;
}
cout << “Total CGPA of all students is:” << totalcgpa << endl;
cout << “CGPA average is:” << average << endl;
cout << “Total number of students who get more than average CGPA is:” << bilpelajar << endl;
cout << “Min CGPA is:” << cgpaMin << endl;
cout << “Max CGPA is:” << cgpaMax << endl;
}

void main( )
{
STUDENT CS, DIA, DIS;
CS. setData( );
CS. CalTotalCGPA( );
CS. CalBilAvg( );
CS. cgpaMin( );
CS.cgpaMax( );
clrscr( );
CS. displayData( );

DIA.setData( );
DIA.CalTotalCGPA( );
DIA.CalBilAvg( );
DIA.cgpaMin( );
DIA.cgpaMax( );
clrscr( );
DIA.displayData( ):

DIS.setData( );
DIS.CalTotalCGPA( );
DIS.CalBilAvg( );
DIS.cgpaMin( );
DIS.cgpaMax( );
clrscr( );
DIS.displayData( );
}

[Peter87]

conio.h is probably a file. To change it you can try open it in a text editor, make the changes you want to make and save it.

[writetonsharma]

why would you want to change a header file ?

[MikeyBoy]

Conio.h is a third-party header file, containing definitions that are necessary to use other 3rd-party libraries.

Changing the contents of that file would be a PHENOMENALLY BAD IDEA, unless you have access to all the code of those libraries so that you can rebuild them with the modified header.

[JLBorges]

> How to change conio.h?

Easy, for this particular program.

1. Just comment out or delete // #include <conio.h>

2. Write a function:

inline void clrscr( int page_size = 20 ) 
{ for( int i = 0 ; i < page_size ; ++i ) std::cout << '\n' ; }

[itishanikas]

Er, how to include that function in my coding? ^ ^

[JLBorges]

> how to include that function in my coding?

Just write the function and use it.

For example:

#include <iostream>

inline void clrscr( int page_size = 20 ) 
{ for( int i = 0 ; i < page_size ; ++i ) std::cout << '\n' ; }

int main()
{
   // write some stuff to stdout
   for( int i = 0 ; i < 10 ; ++i ) std::cout << "something\n" ;
   
   // clear up the clutter by simulating clearing of the screen
   std::cout << "hit enter to clear the screen ... " ;
   std::cin.get() ; 
   clrscr() ;
   
   std::cout << "hello without the clutter\n" ;
}