C语言中如何传递可变参数

char a[ ]="1234567890";char *p;p = a;void LCD12864_Printf(unsigned char X, unsigned char Y, const char *FORMAT,unsigned char *p) { char str[17]="\0"; sprintf(str, FORMAT, ...); LCD12864_PositionString(X,Y,str); //在屏幕上坐标为（X，