[mw_shl_code=c,true] while(RNG_Init()) //初始化随机数发生器 { LCD_ShowString(30,130,200,16,16," RNG Error! "); delay_ms(200); LCD_ShowString(30,130,200,16,16,"RNG Trying..."); } LCD_ShowString(30,130,200,16,16,"RNG Ready! "); LCD_ShowString(30,150,200,16,16,"KEY0:Get Random Num"); LCD_ShowString(30,180,200,16,16,"Random Num:"); LCD_ShowString(30,200,200,16,16,"Random Num[5 Dgt]:"); LCD_ShowString(30,220,200,16,16,"Random Num[3 Dgt]:"); //LCD_ShowString(30,240,200,16,16,"Random Num[0-9]:"); POINT_COLOR=BLUE; while(1) { delay_ms(10); key=KEY_Scan(0); /*if((t%20)==0) { LED1=!LED1; //每200ms,翻转一次LED0 random=RNG_Get_RandomRange(0,9);//获取[0,9]区间的随机数 LCD_ShowNum(30+8*16,240,random,1,16); //显示随机数 }*/ if(key==KEY0_PRES) { random=RNG_Get_RandomNum(); //获得随机数 seven=random%10000000; five=seven/100; three=five/100; LCD_ShowNum(30+8*11,180,seven,7,16); //显示后7位随机数 LCD_ShowNum(30+8*18,200,five,5,16); //显示前5位随机数 LCD_ShowNum(30+8*18,220,three,3,16); //显示前3位随机数 } delay_ms(10); //t++; } } [/mw_shl_code] 小白刚刚入stmf4坑不久，当前学习例程16.图上代码系部分main.c的修改版（从line31开始，其实就改了几句话）。打算做成一个能够同时生成排列3，排列5和7星彩的简易彩票机选器。但是当生成数的首位数为0的时候，前面的0显示不到tftlcd上……