2021.4.12

1.

/*在主函数中输入一个一维数组，调用函数maxAndMin得到数组元素中的最大值与最小值
* 信1905-2聂旭东20194006
*/
#include <iostream>
using namespace std;
#define SIZE 10

void maxAndMin(int a[], int& maximum, int& minimum) {
maximum = a[0];
minimum = a[0];
for (int i = 1; i < SIZE; i++) {
if (a[i] > maximum)
maximum = a[i];
if (a[i] < minimum)
minimum = a[i];
}
}
int main(){
int numbers[SIZE], maxValue, minValue, i;
cout << "Please input " << SIZE << " numbers:";
for (i = 0; i < SIZE; i++)
cin >> numbers[i];

maxAndMin(numbers, maxValue, minValue);

cout << "The maximum is: " << maxValue << endl;
cout << "The minimum is: " << minValue << endl;

return 0;
}

2.

/*用C++语言编写函数，使用函数重载，能求两个整数的最大数、三个整数的最大数、四个整数的最大数
* 信1905-2聂旭东20194006
*/

#include<iostream>
using namespace std;

int max(int a, int b){
if (a > b)
return a;
else return b;
}
int max(int a, int b, int c){
if (a > b) {
if (a > c)
return a;
else return c;
}
else {
if (b > c)
return b;
else return c;
}
}
int max(int a[4])
{
int i, max = a[0];
for (i = 0; i < 3; i++) {
if (max < a[i]) max = a[i];
}
return max;
}
void main()
{
int i, n, x, a[4];
cout << "请输入你想要的数字：";
cin >> n;
for (i = 0; i < n; i++)
{
cin >> a[i];
}
if (n == 2)
x = max(a[0], a[1]);
else if (n == 3)
x = max(a[0], a[1], a[2]);
else if (n == 4)
x = max(a);
cout << "最大值是：" << x << endl;
}

3.

/*定义一个学生类
*在主函数中定义一个有3个元素的对象数组并分别输入，然后输出对象数组的信息
* 信1905-2聂旭东20194006
*/
#include<iostream>
using namespace std;
class Student
{
public:
Student();
void Input(int a, string str);
void Output();
private:
int age;
string name;
};
Student::Student()
{
}
void Student::Input(int a, string str)
{
age = a;
name = str;
}
void Student::Output()
{
cout << "age:" << age << "," << "name:" << name << endl;
}
int main()
{
int i, age;
string name;
Student stus[3];
for (i = 0; i < 3; i++) {
cout << "请输入学生年龄：";
cin >> age;
cout << "请输入学生姓名：";
cin >> name;
stus[i].Input(age, name);
}
for (i = 0; i < 3; i++) {
stus[i].Output();
}
return 0;
}