El archivo de encabezado graphics.h contiene la función imagesize() que devuelve el número de bytes necesarios para almacenar una imagen de bits.
Sintaxis:
unsigned int imagesize(int left, int top,
int right, int bottom);
where,
left, top, right, and bottom
define the area of the screen
in which image is stored.
A continuación se muestra la implementación de la función imagesize().
// C Implementation for imagesize()
#include <graphics.h>
#include <stdio.h>
// driver code
int main()
{
// gm is Graphics mode which is
// a computer display mode that
// generates image using pixels.
// DETECT is a macro defined in
// "graphics.h" header file
int gd = DETECT, gm, color, bytes;
char arr[100];
// initgraph initializes the
// graphics system by loading a
// graphics driver from disk
initgraph(&gd, &gm, "");
// Draws a circle with center at
// (200, 200) and radius as 50.
circle(200, 200, 50);
// draws a line with 2 points
line(150, 200, 250, 200);
// draws a line with 2 points
line(200, 150, 200, 250);
// imagesize function
bytes = imagesize(150, 150, 250, 250);
// sprintf stands for “String print”.
// Instead of printing on console,
// it store output on char buffer
// which are specified in sprintf
sprintf(arr, "Number of bytes required "
"to store required area = %d", bytes);
// outtext function displays text
// at current position.
outtextxy(20, 280, arr);
getch();
// closegraph function closes the
// graphics mode and deallocates
// all memory allocated by
// graphics system .
closegraph();
return 0;
}
Producción :
Publicación traducida automáticamente
Artículo escrito por Sahil_Bansall y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA