c++第5次实验

项目2   数组选择

#include<iostream>
using namespace std;
int main()
{
	const int N=10;
	int A[N],B[N],i,j,k=0;
	cout<<"从键盘中输入十个数"<<endl;
	for(i=0;i<N;i++)
		cin>>A[i];
	for(i=0;i<N;i++)
	{
		for(j=0;j<N;j++)
		{
			if(i==j)
				continue;
			if(A[i]==A[j])
				break;
			if(j==N-1)
			{
				B[k]=A[i];
			    k++;
			}
		}
	}
	cout<<"数组B为：";
	for(i=0;i<k;i++)
		cout<<B[i]<<" ";
		return 0;
}

项目3——数组求和

#include <iostream>
using namespace std;
int main()
{
   int i,a[10],sum1=0,sum2=0;
   cout<<"输入十个数：";
   for(i=0;i<10;i++)
   {
       cin>>a[i];
   }
   for(i=0;i<10;i++)
   {
       if(a[i]>0)
       sum1+=a[i];
       else if(a[i]<0)
       sum2+=a[i];
   }
   cout<<"sum1="<<sum1<<endl;
   cout<<"sum2="<<sum2<<endl;
   return 0;
}

四。

#include<iostream>
using namespace std;
int main()
{
	int N, i = 0, j = 0, k = 0,m, n;
	double a[10], max = 0, min = 0, sum = 0, average = 0;
    cout<< "请输入10个同学的成绩（0到100之间）：";
	for (i = 0; i < 10; i++)
	{
		cin >> a[i];
	}
		max = a[0];
		min = a[0];
		for (i = 1; i<10; i++)
		{
			if (a[i]>max)
				max = a[i];
			if (a[i]<min)
				min = a[i];
		}
		cout << "最高分为" << max << "，" << "最低分为" << min << "，";
		for (i = 0; i<10; i++)
		{
			sum = sum + a[i];
		}
		average = sum / 10.0;
		cout << "平均分为" << average << endl;
		cout << "最高分同学的学号为";
		for (i = 0; i<10; i++)
		{
			if (max == a[i])
			{
				j++;
				m= i+1;
				cout << m << " ";
			}
		}
		cout << endl;
		cout << "最低分同学的学号为";
		for (i = 0; i < 10; i++)
		{
			if (min == a[i])
			{
				k++;
				n = i + 1;
				cout << n <<" ";
			}
		}
		cout << endl;
		cout << "分数最高的同学有" <<j<< endl;
		cout << "分数最低的同学有" <<k<< endl;

			return 0;
}