ex14.lst

《单片机c程序设计及应用实列》一书的源代

C51 COMPILER V6.02  EX14                                                                   09/15/2002 22:09:26 PAGE 1   


C51 COMPILER V6.02, COMPILATION OF MODULE EX14
OBJECT MODULE PLACED IN .\ex14.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE .\ex14.c 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          
   7          #ifdef MONITOR51                         /* Debugging with Monitor-51 needs   */
              char code reserve [3] _at_ 0x23;         /* space for serial interrupt if     */
              #endif                                   /* Stop Exection with Serial Intr.   */
  10                                                   /* is enabled                        */
  11          
  12          
  13          /*------------------------------------------------
  14          The main C function.  Program execution starts
  15          here after stack initialization.
  16          ------------------------------------------------*/
  17          void main (void) {
  18   1      
  19   1      	int month;
  20   1      	int day;
  21   1      /*------------------------------------------------
  22   1      Setup the serial port for 1200 baud at 16MHz.
  23   1      ------------------------------------------------*/
  24   1      #ifndef MONITOR51
  25   1          SCON  = 0x50;		        /* SCON: mode 1, 8-bit UART, enable rcvr      */
  26   1          TMOD |= 0x20;               /* TMOD: timer 1, mode 2, 8-bit reload        */
  27   1          TH1   = 221;                /* TH1:  reload value for 1200 baud @ 16MHz   */
  28   1          TR1   = 1;                  /* TR1:  timer 1 run                          */
  29   1          TI    = 1;                  /* TI:   set TI to send first char of UART    */
  30   1      #endif
  31   1      /*------------------------------------------------
  32   1      Note that an embedded program never exits (because
  33   1      there is no operating system to return to).  It
  34   1      must loop and execute forever.
  35   1      ------------------------------------------------*/
  36   1      	printf("please input the month number :");
  37   1      	scanf("%d",&month ) ;
  38   1      	switch (month)
  39   1      	{
  40   2      		case 1:
  41   2      		case 3:
  42   2      		case 5:
  43   2      		case 7:
  44   2      		case 8:
  45   2      		case 10:
  46   2      		case 12: day=31;
  47   2      				break;
  48   2      		case 4:
  49   2      		case 6:
  50   2      		case 9:
  51   2      		case 11:day=30;
  52   2      				break;
  53   2      		case 2: day=28;
  54   2      			break;
  55   2      		default : day=-1;
C51 COMPILER V6.02  EX14                                                                   09/15/2002 22:09:26 PAGE 2   

  56   2      	}
  57   1      	if(day==-1)
  58   1      	printf("Invalid month input !\n");
  59   1      	else
  60   1      	printf("1999.%d has %d days \n",month,day);
  61   1          while (1) {};
  62   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    169    ----
   CONSTANT SIZE    =     80    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       4
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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