3-14.lst

一些简单的c51程序

C51 COMPILER V7.09   3_14                                                                  08/25/2005 10:01:03 PAGE 1   


C51 COMPILER V7.09, COMPILATION OF MODULE 3_14
OBJECT MODULE PLACED IN 3-14.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 3-14.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              int j,n,p,q,flagp,flagq;
   7   1              
   8   1              SCON = 0x50; 
   9   1      TMOD |= 0x20; 
  10   1      TH1 = 0xf3; 
  11   1      TR1 = 1;
  12   1      TI = 1; 
  13   1              
  14   1              printf("please input n :");
  15   1              scanf("%d",&n);
  16   1              if (((n%2)!=0)||(n<=4))
  17   1                      printf("input data error!\n");
  18   1              else
  19   1              {
  20   2                      p = 1 ;
  21   2                      do {
  22   3                              p = p + 1 ;
  23   3                              q = n - p ;
  24   3                              flagp=1;
  25   3                              for(j=2; j <= (int)(floor(sqrt((double)(p))));j++)
  26   3                              {
  27   4                                      if ((p%j)==0)
  28   4                                      {
  29   5                                              flagp=0;
  30   5                                              break;
  31   5                                      }
  32   4                              }
  33   3                              flagq=1;
  34   3                              for (j=2;j<=(int)(floor(sqrt((double)(q))));j++)
  35   3                              {
  36   4                                      if ((q%j)==0)
  37   4                                      {
  38   5                                              flagq= 0 ;
  39   5                                              break;
  40   5                                      }
  41   4                              }
  42   3                      } while (flagp*flagq==0);
  43   2                      printf("%d = %d + %d \n",n,p,q);
  44   2              }
  45   1          while (1) {};
  46   1      }
  47          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    301    ----
   CONSTANT SIZE    =     54    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----      12
C51 COMPILER V7.09   3_14                                                                  08/25/2005 10:01:03 PAGE 2   

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


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