imagesize function returns the number of bytes required to store a bitimage. This function is used when we are using getimage.
Declaration:- unsigned int imagesize(int left, int top, int right, int bottom);
C programming code for imagesize
#include <graphics.h>
#include <conio.h>
#include <conio.h>
main()
{
int gd = DETECT, gm, bytes;
char array[100];
initgraph(&gd, &gm, "C:\\TC\\BGI");
circle(200, 200, 50);
line(150, 200, 250, 200);
line(200, 150, 200, 250);
bytes = imagesize(150, 150, 250, 250);
sprintf(array, "Number of bytes required to store required area = %d", bytes);
outtextxy(10, 280, array);
getch();
closegraph();
return 0;
}