main.lst

《8051系列单片机C程序设计完全手册》的光盘中的所有源代码

C51 COMPILER V6.23a  MAIN                                                                  11/13/2002 23:24:52 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          /*------------------------------------------------
  11          The main C function.  Program execution starts
  12          here after stack initialization.
  13          ------------------------------------------------*/
  14          void main (void) {
  15   1      
  16   1              int a[3][4],*ptr,i,j,max,maxi,maxj;
  17   1              /* max 是数组的最大，maxi是最大元素所在行，maxj是最大元素所在列*/
  18   1              int max_arr(int *b,int *p1,int *p2,int n);/*函数声明*/
  19   1      /*------------------------------------------------
  20   1      Setup the serial port for 1200 baud at 16MHz.
  21   1      ------------------------------------------------*/
  22   1      #ifndef MONITOR51
  23   1          SCON  = 0x50;                       /* SCON: mode 1, 8-bit UART, enable rcvr      */
  24   1          TMOD |= 0x20;               /* TMOD: timer 1, mode 2, 8-bit reload        */
  25   1          TH1   = 221;                /* TH1:  reload value for 1200 baud @ 16MHz   */
  26   1          TR1   = 1;                  /* TR1:  timer 1 run                          */
  27   1          TI    = 1;                  /* TI:   set TI to send first char of UART    */
  28   1      #endif
  29   1      /*------------------------------------------------
  30   1      Note that an embedded program never exits (because
  31   1      there is no operating system to return to).  It
  32   1      must loop and execute forever.
  33   1      ------------------------------------------------*/
  34   1              for( i = 0 ; i < 3 ; i++)
  35   1                      for( j = 0 ; j < 4 ; j++)
  36   1                              scanf( "%d" , &a[i][j]) ;
  37   1                      ptr= a[0] ;/*将二维数组的首地址传递给指针变量*/
  38   1                      max_arr(ptr, &max,&maxi,12) ;
  39   1                      maxj=maxi%4;/*每行有四个元素，求该元素所在列*/
  40   1                      maxi=maxi/4 ;/*求该元素所在行*/
  41   1                      printf("max=%d,maxi=%d,maxj=%d",max,maxi,maxj);
  42   1          while (1) {};
  43   1      }
  44          
  45          int max_arr(int *b,int *p1,int *p2,int n)
  46          /* b 指向二维数组的指针，p1指向最大值，p2指向最大值在一维数组中的位置，*/
  47          /* n 是数组的大小*/
  48          {
  49   1              int i;
  50   1              *p1=b[0]; *p1=0;
  51   1              for(i=1;i < n;i++)/*找最大*/
  52   1                      if (b[i]>*p1) {*p1=b[i]; *p2=i;}
  53   1      }
  54          
  55          
C51 COMPILER V6.23a  MAIN                                                                  11/13/2002 23:24:52 PAGE 2   



MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    525    ----
   CONSTANT SIZE    =     26    ----
   XDATA SIZE       =   ----      47
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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