58.c

来自「c算法百例」· C语言 代码 · 共 27 行

#include <graphics.h> 
#include <stdlib.h> 
#include <stdio.h> 
#include <conio.h> 
int main(void) 
{  /* request auto detection */ 
int gdriver = DETECT, gmode, errorcode; 
int midx, midy, i; 
/* initialize graphics and local variables */ 
initgraph(&gdriver, &gmode, ""); /* read result of initialization */ 
errorcode = graphresult(); 
if (errorcode != grOk)  /* an error occurred */ 
{ 
printf("Graphics error: %s\n", grapherrormsg(errorcode)); 
printf("Press any key to halt:"); 
getch(); 
exit(1); /* terminate with an error code */ } 
midx = getmaxx() / 2; 
midy = getmaxy() / 2; /* loop through the fill patterns */ 
for (i=SOLID_FILL; i<USER_FILL; i++) 
{ /* set the fill style */ 
setfillstyle(i, getmaxcolor()); /* draw the bar */ 
bar(midx-50, midy-50, midx+50, midy+50); getch(); }/* clean up */ closegraph(); 
return 0; 
}