头文件graphics.h包含grapherrormsg()函数,该函数返回错误消息字符串。句法:
char *grapherrormsg( int errorcode ); where, errorcode:code for the respective error
grapherrormsg()的示意图:在下面的程序中,gd = DETECT未被写入,因此程序必须抛出错误。
下面是在C语言中grapherrormsg()函数的实现
// C Implementation for grapherrormsg()
#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, gm, errorcode;
// initgraph initializes the
// graphics system by loading a
// graphics driver from disk
initgraph(&gd, &gm, "");
// graphresult returns the error code
// for the last graphics operation
// that reported an error and resets
// the error level to grOk.
errorcode = graphresult();
if( errorcode != grOk)
{
printf("Graphics error:%s\n",
grapherrormsg(errorcode));
printf("Press any key to exit.");
getch();
exit(1);
}
getch();
// closegraph function closes the
// graphics mode and deallocates
// all memory allocated by
// graphics system .
closegraph();
return 0;
}
输出:
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注:本文由纯净天空筛选整理自Sahil_Bansall大神的英文原创作品 grapherrormsg() function in C。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。