main.lst

《单片机c程序设计及应用实列》一书的源代

C51 COMPILER V6.23a  MAIN                                                                  11/06/2002 10:00:18 PAGE 1   


C51 COMPILER V6.23a, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE main.c LARGE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <REG52.H>                /* special function register declarations   */
   2                                            /* for the intended 8051 derivative         */
   3          
   4          #include <stdio.h>                /* prototype declarations for I/O functions */
   5          
   6          #ifdef MONITOR51                         /* Debugging with Monitor-51 needs   */
              char code reserve [3] _at_ 0x23;         /* space for serial interrupt if     */
              #endif                                   /* Stop Exection with Serial Intr.   */
   9                                                   /* is enabled                        */
  10          #define N 10
  11          
  12          /*------------------------------------------------
  13          The main C function.  Program execution starts
  14          here after stack initialization.
  15          ------------------------------------------------*/
  16          void main (void) {
  17   1      
  18   1              void input(int arr[],int n);/*函数声明*/
  19   1              void sort(int *ptr,int n);
  20   1              void output(int arr[],int n);
  21   1              int a[N],*p;/*定义一维数组和指针变量*/
  22   1      
  23   1      /*------------------------------------------------
  24   1      Setup the serial port for 1200 baud at 16MHz.
  25   1      ------------------------------------------------*/
  26   1      #ifndef MONITOR51
  27   1          SCON  = 0x50;                       /* SCON: mode 1, 8-bit UART, enable rcvr      */
  28   1          TMOD |= 0x20;               /* TMOD: timer 1, mode 2, 8-bit reload        */
  29   1          TH1   = 221;                /* TH1:  reload value for 1200 baud @ 16MHz   */
  30   1          TR1   = 1;                  /* TR1:  timer 1 run                          */
  31   1          TI    = 1;                  /* TI:   set TI to send first char of UART    */
  32   1      #endif
  33   1      /*------------------------------------------------
  34   1      Note that an embedded program never exits (because
  35   1      there is no operating system to return to).  It
  36   1      must loop and execute forever.
  37   1      ------------------------------------------------*/
  38   1              input(a,N) ;/*数据输入函数调用，实参a 是数组名*/
  39   1              p = a ;/*指针变量指向数组的首地址*/
  40   1              sort(p,N) ;/*排序，实参p 是指针变量*/
  41   1              output(p,N) ;/*输出，实参p 是指针变量*/
  42   1          while (1) {};
  43   1      }
  44          void input(int arr[],int n)/*无需返回值的输入数据函数定义,形参a r r 是数组*/
  45          {
  46   1              int i;
  47   1              printf("input data:\n");
  48   1              for( i = 0 ; i < n ; i++ )/*采用传统的下标法*/
  49   1                      scanf( "%d" , &arr[i] ) ;
  50   1      }
  51          void sort(int *ptr,int n)/*冒泡排序，形参p t r 是指针变量*/
  52          {
  53   1              int i,j,t;
  54   1              for( i = 0 ; i < n - 1 ; i++ )
  55   1                      for( j = 0 ; j < n - 1 - i ; j++ )
C51 COMPILER V6.23a  MAIN                                                                  11/06/2002 10:00:18 PAGE 2   

  56   1                              if (*(ptr+j)>*(ptr+j+1))/*相临两个元素进行比较*/
  57   1                              {
  58   2                                      t = * (ptr+ j ) ;/*两个元素进行交换*/
  59   2                                      *(ptr+ j ) = * (ptr +j+1) ;
  60   2                                      *(ptr+ j + 1 ) = t ;
  61   2                              }
  62   1      }
  63          void output(int arr[],int n)/*数据输出*/
  64          {
  65   1              int *ptr=arr;/*利用指针指向数组的首地址*/
  66   1              printf("output data:\n");
  67   1              for( ; ptr-arr<n ; ptr++ )/*输出数组的n 个元素*/
  68   1                      printf("%4d",*ptr) ;
  69   1              printf("\n");
  70   1      }
  71          
  72          
  73          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    641    ----
   CONSTANT SIZE    =     36    ----
   XDATA SIZE       =   ----      49
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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