第 一 部 分
1.猜数字练习
#include <iostream>
#include<string>
using namespace std;
int main(void)
{
int num = rand() % 100;
cout << num << endl;
int puT = 0;
cout << "请你猜一下这个数是多少\n" << endl;
while ((cin >> puT))
{
if (puT > num)
{
cout << "猜大了\n" << endl;
}
else if (puT <= num / 2)
{
cout << "太小了\n" << endl;
}
else if (puT >= num / 2 && puT < num)
{
cout << "再大一点\n" << endl;
}
else if (num == puT)
{
cout << "猜对了\n" << endl;
break;
}
}
system("pause");
return 0;
}
2.水仙花数练习
#include <iostream>
using namespace std;
int main(void)
{
int ge = 0;
int shi = 0;
int bai = 0;
int i = 100;
do
{
ge = i % 10;
shi = (i / 10) % 10;
bai = i / 100;
if (i == ge * ge * ge + shi * shi * shi + bai * bai * bai)
{
cout << i << endl;
}
i++;
} while (i < 1000);
system("pause");
return 0;
}
3.敲桌子练习
#include<iostream>
using namespace std;
int main(void)
{
for (int i = 1; i < 100; i++)
{
int ge = i % 10;
int shi = (i /10)% 10;
if (i % 7 == 0 || ge == 7 || shi == 7)
{
cout << i << endl;
}
}
}
4.10*10的正方形
#include<iostream>
using namespace std;
int main(void)
{
for (int i = 0; i < 10; i++)
{
for (int i = 0; i < 10; i++)
{
cout << "* ";
}
cout << endl;
}
}
5.9*9的乘法表
#include<iostream>
using namespace std;
int main(void)
{
for (int i = 1; i < 10; i++)
{
for (int j = 1; j <= i; j++)
{
cout << j <<"*"<< i<<"="<< i* j<<" ";
}
cout << endl;
}
system("pause");
return 0;
}
6.五只小猪谁最重
#include<iostream>
using namespace std;
int main(void)
{
int temp = 0;
int Weight[5] = { 300,250,200,400,450 };
for (int i = 0; i < 5; i++)
{
if (Weight[i] > temp)
{
temp = Weight[i];
}
}
cout << "最重的小猪是" << temp << "kg";
return 0;
}
7.冒泡排序
//排列这个数组{7,5,2,4,9,8,6,7,1}
#include<iostream>
using namespace std;
int main(void)
{
//排序的总轮数=元素个数-1
//每轮对比的次数 = 元素个数- 排序轮数
int nums[9] = { 7,5,2,4,9,8,6,7,1 };
for (int i = 0; i < 8 ; i++)
{
//内层循环对比
for (int j = 0; j < 9 - i-1; j++)
{
//第一个数比第二个数大就交换他们两个的位置
int temp = 0;
if (nums[j] > nums[j + 1])
{
temp = nums[j+1];
nums[j + 1] = nums[j];
nums[j] = temp;
}
}
}
for (int i = 0; i < 9; i++)
{
cout << nums[i];
}
return 0;
}
8.结构体
#include<iostream>
#include<string>
#include<ctime>
using namespace std;
struct Student
{
string name;
int age;
int score;
};
struct Teacher
{
string name;
struct Student sArry[5];
};
void inPutInformation(struct Teacher tArry[], int len)
{
string Name = "ABCDE";
for (int i = 0; i < len; i++)
{
tArry[i].name = "Teacher_";
tArry[i].name += Name[i];
for (int j = 0; j < 5; j++)
{
tArry[i].sArry[j].name = "Student_";
tArry[i].sArry[j].name += Name[j];
int random = rand()% 60 +40;
tArry[i].sArry[j].score = random;
}
}
}
void printInformation(struct Teacher tArry[],int len)
{
for (int i = 0; i < len; i++)
{
cout << "老师的姓名：" << tArry[i].name << endl;
for (int j = 0; j < 5; j++)
{
cout << "\t学生的姓名：" << tArry[i].sArry[j].name << "考试分数：" << tArry[i].sArry[j].score << endl;
}
}
}
int main(void)
{
srand((unsigned int)time(NULL));
struct Teacher tArry[3];
int len = sizeof(tArry) / sizeof(tArry[0]);
inPutInformation(tArry,len);
printInformation(tArry,len);
system("pause");
return 0;
}
大 案 例
通 讯 录 管 理 系 统
#include<iostream>
#include<string>
#include<cstdlib>
#define MAX 1000
using namespace std;
struct Person
{
string name;
int age;
string sex;
string phone;
string addr;
};
struct addreassbooks
{
struct Person personarry[MAX];
int m_Size;
};
void mainMenu()
{
cout << "--------------------" << endl;
cout<<"1.增加联系人" << endl;
cout<<"2.显示联系人" << endl;
cout<<"3.删除联系人" << endl;
cout<<"4.查找联系人" << endl;
cout<<"5.修改联系人" << endl;
cout<<"6.清空联系人" << endl;
cout<<"0.退出通讯录" << endl;
cout << "--------------------" << endl;
}
void addPerson(addreassbooks* abs)
{
if (abs->m_Size == MAX)
{
cout << "联系人已满，无法添加" << endl;
return;
}
string name;
cout << "请输入姓名" << endl;
cin >> name;
abs->personarry[abs->m_Size].name = name;
string sex;
cout << "请输入性别" << endl;
cin >> sex;
abs->personarry[abs->m_Size].sex = sex;
int age;
cout << "请输入年龄" << endl;
cin >> age;
abs->personarry[abs->m_Size].age = age;
string phone;
cout << "请输入电话" << endl;
cin >> phone;
abs->personarry[abs->m_Size].phone = phone;
string addr;
cout << "请输入地址" << endl;
cin >> addr;
abs->personarry[abs->m_Size].addr = addr;
//更新通讯录人数
abs->m_Size++;
cout << "添加成功" << endl;
system("pause");
system("cls");
}
void printPerson(addreassbooks* abs)
{
if (abs->m_Size == 0)
{
cout << "当前记录为空" << endl;
}
else
{
for (int i = 0; i < abs->m_Size; i++)
{
cout << "姓名\t" << abs->personarry[i].name << endl;
cout << "性别\t" << abs->personarry[i].sex << endl;
cout << "年龄\t" << abs->personarry[i].age << endl;
cout << "电话\t" << abs->personarry[i].phone << endl;
cout << "地址\t" << abs->personarry[i].addr << endl;
cout << "\n";
}
}
system("pause");
system("cls");
}
int checkPerson(addreassbooks* abs, string name)
{
for (int i = 0; i < abs->m_Size; i++)
{
if (abs->personarry[i].name == name)
{
return i;
}
}
return -1;
}
void deletePerson(addreassbooks* abs)
{
string dname;
cout << "请输入你要删除的人名" << endl;
cin >> dname;
int ret = checkPerson(abs, dname);
if (ret == -1)
{
cout << "查无此人" << endl;
}
else
{
for (int i = ret; i < abs->m_Size; i++)
{
abs->personarry[i] = abs->personarry[i + 1];
}
abs->m_Size--;
cout << "删除成功" << endl;
}
system("pause");
system("cls");
}
void findPerson(addreassbooks* abs)
{
string fname;
cout << "请输入要查找的联系人姓名" << endl;
cin >> fname;
int result = checkPerson(abs, fname);
if (result == -1)
{
cout << "查无此人" << endl;
}
else
{
cout << "姓名\t" << abs->personarry[result].name << endl;
cout << "性别\t" << abs->personarry[result].sex << endl;
cout << "年龄\t" << abs->personarry[result].age << endl;
cout << "电话\t" << abs->personarry[result].phone << endl;
cout << "地址\t" << abs->personarry[result].addr << endl;
}
system("pause");
system("cls");
}
void modifyPerson(addreassbooks* abs)
{
string mname;
cout << "请输入要修改的联系人姓名" << endl;
cin >> mname;
int result = checkPerson(abs, mname);
if (result == -1)
{
cout << "查无此人" << endl;
}
else
{
string name;
cout << "请输入姓名" << endl;
cin >> name;
abs->personarry[result].name = name;
string sex;
cout << "请输入性别" << endl;
cin >> sex;
abs->personarry[result].sex = sex;
int age;
cout << "请输入年龄" << endl;
cin >> age;
abs->personarry[result].age = age;
string phone;
cout << "请输入电话" << endl;
cin >> phone;
abs->personarry[result].phone = phone;
string addr;
cout << "请输入地址" << endl;
cin >> addr;
abs->personarry[result].addr = addr;
cout << "修改成功" << endl;
}
system("pause");
system("cls");
}
void cleanPerson(addreassbooks*abs)//逻辑清空
{
abs->m_Size = 0;
cout << "通讯录清空成功！" << endl;
system("pause");
system("cls");
}
int main(void)
{
//创建通讯录结构体变量
addreassbooks abs;
//初始化通讯录中当前人员的个数
abs.m_Size = 0;
int select = 0;
while (1)
{
mainMenu();
cin >> select;
switch (select)
{
case 1://添加联系人
addPerson(&abs);
break;
case 2://显示联系人
printPerson(&abs);
break;
case 3://删除联系人
deletePerson(&abs);
break;
case 4://查找联系人
findPerson(&abs);
break;
case 5://修改联系人
modifyPerson(&abs);
break;
case 6://清空联系人
cleanPerson(&abs);
break;
case 0://退出通讯录
cout << "欢迎下次使用" << endl;
system("pause");
return 0;
default:
break;
}
}
}
第 二 部 分
1.圆
#include<iostream>
using namespace std;
double pi = 3.14;
//class 代表设计一个类，类后面紧跟着的就是类名称
class Circle
{
//访问权限
//公共权限
public:
//属性
//半径
int c_r;
//行为
//获取圆的周长
double calculateZC()
{
return 2 * pi * c_r;
}
};
int main(void)
{
//通过圆类创建具体的圆(对象)
//实例化——通过一个类创建一个对象的过程
Circle c1;
//给圆对象的属性进行赋值
c1.c_r = 10;
cout << "圆的周长为" << c1.calculateZC() << endl;
return 0;
}
2.学生
#include<iostream>
#include<string>
using namespace std;
class Student
{
public:
string s_Name;
int s_Id;
void showStudent()
{
cout << "姓名： " << s_Name << "ID：" << s_Id << endl;
}
//赋值
void inputName(string name)
{
s_Name = name;
}
};
int main(void)
{
Student s1;
//s1.s_Name = "张三";
s1.inputName("赵六");
s1.s_Id = 123456;
s1.showStudent();
return 0;
}
3.人
#include<iostream>
#include<string>
using namespace std;
class Person
{
public:
//设置姓名
void setName(string name)
{
p_name = name;
}
//获取姓名
string getName()
{
return p_name;
}
//获取年龄
int getAge()
{
return p_age;
}
//设置年龄
void setAge(int age)
{
p_age = age;
if (age < 0 || age >150)
{
p_age = 0;
cout << "鬼先生您好，再见！" << endl;
return;
}
}
//设置伙伴
void setLover(string lname)
{
lover = lname;
}
private:
//姓名 可读可写
string p_name;
//年龄 可读可写加个范围
int p_age;
//伙伴 只写
string lover;
};
int main(void)
{
Person p1;
p1.setName("张三");
cout << "姓名:" << p1.getName() << endl;
p1.setAge(18);
cout << "年龄:" << p1.getAge() << endl;
p1.setLover("赵四");
return 0;
}
4.立方体
#include<iostream>
using namespace std;
class Cube
{
public:
void setl(int l)
{
C_L = l;
}
int getl()
{
return C_L;
}
void setw(int w)
{
C_W = w;
}
int getw()
{
return C_W;
}
void seth(int h)
{
C_H= h;
}
int geth()
{
return C_H;
}
//表面积
int calculateS()
{
return 2 * C_L * C_W + 2 * C_L * C_H + 2 * C_W * C_H;
}
//体积
int calculateV()
{
return C_L * C_W * C_H;
}
//成员函数判断是否相等
bool issamebyClass(Cube &c)
{
if (C_H== c.geth() && C_L == c.getl() && C_W == c.getw())
{
return true;
}
return false;
}
private:
int C_L;
int C_W;
int C_H;
};
//利用全局函数判断相等
bool issame(Cube &c1, Cube &c2)
{
if (c1.geth() == c2.geth() && c1.getl() == c2.getl() && c1.getw() == c2.getw())
{
return true;
}
return false;
}
int main(void)
{
Cube c1;
c1.seth(10);
c1.setl(10);
c1.setw(10);
cout << c1.calculateS() << endl;
cout << c1.calculateV() << endl;
Cube c2;
c2.seth(10);
c2.setl(10);
c2.setw(10);
//判断是否相等
bool ret = issame(c1, c2);
if (ret)
{
cout << "c1和c2相等" << endl;
}
else
{
cout << "c1和c2不相等" << endl;
}
//成员函数判断
bool ret2 = c1.issamebyClass(c2);
if (ret2)
{
cout << "利用成员函数,c1和c2相等" << endl;
}
else
{
cout << "利用成员函数,c1和c2不相等" << endl;
}
system("pause");
return 0;
}