C語言 grapherrormsg()用法及代碼示例

// 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; 
}