#include <reg52.h>
#include <string.h>
sbit RS = P1^0; 
sbit RW = P1^1;
sbit EN = P1^2;

sbit BUSY = P0^7;
typedef unsigned char uint8;
typedef unsigned int uint16;
char string[]="guoyingjie";
char neirong[]="151307191";
void wait()
......................

#include <reg52.h>
#include <string.h>
sbit RS = P1^0; 
sbit RW = P1^1;
sbit EN = P1^2;

sbit BUSY = P0^7;
typedef unsigned char uint8;
typedef unsigned int uint16;
char string[]="guoyingjie";
char neirong[]="151307191";
void wait()
......................

#include<stdio.h>
#include<stdlib.h>

#define WEIGHT   3.0e-23
#define CHAGE     950

int main()
{

float k;
printf("Please enter:");
scanf("%f,&k");
......................