以后定义时候尽量把char改成string更好

但是必须在前面添加

#include <string>

// lab08.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <iostream>
#include <string>
using namespace std;
struct student
{
 int num;
 string name;
 string sex;
 double score;

}stu;

int main()
{
 student*p = &stu;
 stu.num = 123;
 stu.name ="wang";
 stu.sex = 'a46';
 //只会显示最后一个字符单引号的时候
 stu.score = 89.7;
 cout << stu.num << 'n' << stu.name << 'n' << stu.sex << 'n' << stu.score;
    return 0;
}

// lab08.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <iostream>
#include <string>
using namespace std;

struct person
{
 string name;
 int count;
}person2[3] = {"wang",0,"cheng",0,"xi",0};

int main()
{
 string person2_name;
 for (int i = 0; i < 10; i++)
 {
  cin >> person2_name;
  for (int j = 0; j < 3; j++)
  
   if (person2_name == person2[j].name)
    person2[j].count++;

  
 }
 cout << endl;
 for (int i = 0; i < 3; i++)
 {
  cout << person2[i].name << person2[i].count;

 }

    return 0;
}

// lab08.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <iostream>
using namespace std;
struct Date
{

 int day;
 int month;
 int year;
};
struct student
{
 int num;
 char name[20];
 char sex;
 Date birthday;
 double score;
}student1, student2 = {"wang","wangming",'f',5,23,2008,89.5};

int main()
{
 student1 = student2;
 cout << student1.num << endl;
 cout << student1.name << endl;
 cout << student1.sex << endl;
 cout << student1.score << endl;
 cout << student1.birthday.day<<'/' << student1.birthday.month<< '/' << student1.birthday.year << endl;
    return 0;
}