3-13.lst

一些简单的c51程序

C51 COMPILER V7.09   3_13                                                                  08/25/2005 09:59:00 PAGE 1   


C51 COMPILER V7.09, COMPILATION OF MODULE 3_13
OBJECT MODULE PLACED IN 3-13.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 3-13.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <REG52.H>              
   2          #include <stdio.h>                
   3          #include <math.h>
   4          void main (void) {
   5   1      
   6   1              float a,b,c,s,x1,x2;
   7   1              double t; 
   8   1      
   9   1              SCON = 0x50; 
  10   1      TMOD |= 0x20; 
  11   1      TH1 = 0xf3; 
  12   1      TR1 = 1;
  13   1      TI = 1; 
  14   1      
  15   1      printf(" please input a,b,c:");
  16   1              scanf("%f %f %f ",&a,&b,&c) ;
  17   1              if(a==0.0)
  18   1                      if(b!=0.0)
  19   1                              printf("the root is :%f\n",-c/b);
  20   1                      else if(c==0.0)
  21   1                              printf("x is inexactive\n ");
  22   1                      else
  23   1                              printf("no root!\n");
  24   1              else
  25   1              {
  26   2                      s=b*b-4*a*c;
  27   2                      if(s>=0.0)
  28   2                              if(s>0.0)
  29   2                              {
  30   3                                      t=sqrt(s);
  31   3                                      x1=-0.5*(b+t)/a;
  32   3                                      x2=-0.5*(b-t)/a;
  33   3                                      printf("There are two different roots:%f and %f\n",x1,x2);
  34   3                              }
  35   2                              else
  36   2                                      printf("There are two equal roots:%f\n",-0.5*b/a);
  37   2                      else
  38   2                      {
  39   3                              t=sqrt(-s) ;
  40   3                              x1=-0.5*b/a; /*实部*/
  41   3                              x2=abs(0.5*t/a); /*虚部的绝对值*/
  42   3                              printf("There are two virtual roots:");
  43   3                              printf("%f+i%f\t\t%f-i%f\n",x1,x2,x1,x2 );
  44   3                      }
  45   2              }
  46   1          while (1) {};
  47   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    640    ----
   CONSTANT SIZE    =    192    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      28
C51 COMPILER V7.09   3_13                                                                  08/25/2005 09:59:00 PAGE 2   

   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)