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  • Publicado : 17 de octubre de 2010
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#include void arc(int x, int y, int stangle, int endangle, int radius);

Description arc draws a circular arc in the current drawing color centered at (x,y) with a radius given byradius. The arc travels from stangle to endangle. If stangle equals 0 and endangle equals 360, the call to arc draws a complete circle. The angle for arc is reckoned counterclockwise, with 0 degrees at 3o'clock, 90 degrees at 12 o'clock, and so on. The linestyle parameter does not affect arcs, circles, ellipses, or pie slices. Only the thickness parameter is used. If you are using a CGA in highresolution mode or a monochrome graphics adapter, the examples in online Help that show how to use graphics functions might not produce the expected results. If your system runs on a CGA or monochromeadapter, pass the value 1 to those functions that alter the fill or drawing color (setcolor, setfillstyle, and setlinestyle, for example), instead of a symbolic color constant (defined in graphics.h).Return Value None. See also circle ellipse fillellipse getarcoords getaspectratio pieslice sector Example
/* arc example */ #include #include #include #include

int main(void) { /* requestautodetection */ int gdriver = DETECT, gmode, errorcode;

int midx, midy; int stangle = 45, endangle = 135; int radius = 100; /* 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 tohalt:"); getch(); exit(1); /* terminate with an error code */ } midx = getmaxx() / 2; midy = getmaxy() / 2; setcolor(getmaxcolor()); /* draw arc */ arc(midx, midy, stangle, endangle, radius); /* clean up*/ getch(); closegraph(); return 0; }

#include void bar(int left, int top, int right, int bottom);

Description bar draws a filled-in, rectangular, two-dimensional bar. The bar...
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