Write a program which contains a writestring() function which displays a string at a given row and column on a given VDU page, in a given color. If the page number and the color are not passed the page number zero and color 7 should be passed.

#include<iostream>
#include<Windows.h>
#include<conio.h>

using namespace std;

void writestring(const char *, short, short, short = 7, short = 0);
void gotoxy(short, short);

int main()
{
	
	writestring("My name is not khan", 20, 10, 4, 1);
	_getch();
	return 0;
}

void writestring(const char * str, short col, short row, short color, short pnumber)
{
	HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE); //h is handle of current running program
	SetConsoleTextAttribute(h, color); // Text of the screen now have color 4 (RED)

	cout << "Page Number : " << pnumber << endl;

	while (*str != '\0')
	{
		gotoxy(col, row);
		putchar(*str);
		col++;
		str++;
	}
}

void gotoxy(short col, short row)
{
	HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);
	COORD position = { col, row };
	SetConsoleCursorPosition(h, position);

}