3_22.c

浙大《C语言设计基础课程设计》中的例程 有些比较好的代码！

/*--------例程3-22--------*/
#include<dos.h>
#include<graphics.h>

void printtext(unsigned char *temp[],int i);   /*用于在屏幕上显示字符串*/

main()
{
   int i,graphdriver,graphmode;
   unsigned char *temp[4];
   int freq[96]={784,660,588,660,523,523,
		 588,494,440,523,392,392,
		 330,392,440,523,784,440,523,392,
		 784,1048,880,784,660,784,588,588,
		 588,660,494,440,392,440,523,588,
		 330,523,440,392,440,523,392,392,
		 660,784,494,588,440,523,392,392,
		 330,392,330,392,392,440,494,588,440,440,392,440,
		 523,588,784,660,588,660,588,523,440,392,
		 330,523,440,523,440,392,330,392,440,523,
		 392,392,660,784,588,660,588,523,494,440,784,784};
   int dely[96]={25,50,12,12,50,50,
		 25,50,12,12,50,50,
		 50,38,12,38,12,12,12,25,
		 38,12,12,12,12,12,50,50,
		 38,12,25,25,38,12,25,25,
		 25,25,12,12,12,12,50,50,
		 38,12,25,25,12,12,50,25,
		 12,12,12,12,12,12,12,12,50,25,12,12,
		 38,12,25,25,25,12,12,25,12,12,
		 50,50,12,12,12,12,12,12,12,12,
		 50,25,12,12,12,12,12,12,25,25,50,50};

   graphdriver=DETECT;
   graphmode=0;
   temp[0]="Welcome !";
   temp[1]="Please press any key to start ......";
   temp[2]="Enjoy yourself !";
   temp[3]="Press any key to end !";
   temp[4]="Thank you! Bye Bye ......";

   initgraph(&graphdriver,&graphmode,"");     /*系统初始化*/
   cleardevice();                             /*清除屏幕*/

   settextjustify(LEFT_TEXT,CENTER_TEXT);     /*设置字符排列方式*/
   for(i=0;i<2;i++)
       printtext(temp,i);            
   getch();
   for(i=2;i<4;i++)
       printtext(temp,i);
   i=0;
   while(i<96&&!kbhit())
   {
      sound(freq[i]);                       /*扬声器根据频率发声*/
      delay(1100*dely[i]);                   /* 声音延时*/
      i++;
   }
   nosound();                             /* 关闭扬声器*/
   printtext(temp,4); 
   getch();
   closegraph();                           /* 关闭图形模式   */     
} 

void printtext(unsigned char *temp[],int i)
{
   setcolor(4);                             /* 设置颜色*/
   settextstyle(TRIPLEX_FONT,HORIZ_DIR,3); /* 设置字符的字体，方向和大小*/
   outtextxy(100,40+i*50,temp[i]);            /* 在所指定的坐标出显示字符串*/
}
/*--------例程3-22结束--------*/