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892天前#include <graphics.h> |
#include <stdlib.h> |
#include <stdio.h> |
#include <conio.h> |
int main(void) |
{ |
/* select a driver and mode that supports */ |
/* multiple drawing colors. */ |
int gdriver = EGA, gmode = EGAHI, errorcode; |
int color, maxcolor, x, y; |
char msg[80]; |
/* 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 */ |
} |
/* maximum color index supported */ |
maxcolor = getmaxcolor(); |
/* for centering text messages */ |
settextjustify(CENTER_TEXT, CENTER_TEXT); |
x = getmaxx() / 2; |
y = getmaxy() / 2; |
/* loop through the available colors */ |
for (color=1; color<=maxcolor; color++) |
{ |
/* clear the screen */ |
cleardevice(); |
/* select a new background color */ |
setcolor(color); |
/* output a messsage */ |
sprintf(msg, "Color: %d", color); |
outtextxy(x, y, msg); |
getch(); |
} |
/* clean up */ |
closegraph(); |
return 0; |
} |
