C++作业5

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项目1 数组求和

#include <iostream>
using namespace std;
int main()
{
    const int N=5;
	int a[N]={1,2,3,4,5};
	int i,sum1=0,sum2=0;
	for(i=0;i<N;i++)
	{
		
		cin>>a[i];
		if(a[i]>0)
		{
			sum1+=a[i];
		}
		else
		{
			sum2+=a[i];
		}
	}
	cout<<"正数的和为"<<sum1<<endl;
	cout<<"负数的和为"<<sum2<<endl;
	return 0;
}

#include <iostream>
using namespace std;
int main()
{
	int a[10],i=0,max=0,min=0,sum=0,j=0,k=1,m=0,n=0;
	double average=0;
	cout<<"请输入10个学生的成绩(0到100之间)"<<endl;
	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<<"分数最高的为"<<max<<endl;
		cout<<"分数最低的为"<<min<<endl;
		for (i=1;i<10;i++)
		{
			if (max==a[i])
			{
				j=j+1;m=i;
			}
		}
			cout<<"分数最高的同学的号数为"<<m+1<<endl;
		for (i=1;i<10;i++)
		{
			if (min==a[i])
			{
				k++;n=i;
			}
		}
			cout<<"分数最低的同学的号数为"<<n+1<<endl;
		cout<<"分数最高的同学有"<<j<<"个"<<endl;
		cout<<"分数最低的同学有"<<k<<"个"<<endl;
		for (i=0;i<10;i++)
		{
			sum=sum+a[i];
		}
		average=sum/10.0;
		cout<<"均值为"<<average<<endl;
        return 0;
}

#include <iostream>
#include<cstdio>
using namespace std;
int main()
{
   char str[50];
   int d=0,x=0,number=0,other=0,i=0;
   cout<<"输入字符串:";
   gets(str);
   while(str[i]!='\0')
   {
       if(str[i]>='A'&&str[i]<='Z')
        {
            d++;
            i++;
        }
        else if(str[i]>='a'&&str[i]<='z')
        {
            x++;
            i++;
        }
       else if(str[i]>='0'&&str[i]<='9')
        {
            number++;
            i++;
        }
       else
       {
           other++;
           i++;
       }
   }
   cout<<"大写字母个数为"<<d<<endl;
   cout<<"小写字母个数为"<<x<<endl;
   cout<<"数字字符个数为"<<number<<endl;
   cout<<"其他字符个数为"<<other<<endl;
   return 0;
}

C++作业5

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原文地址：http://blog.csdn.net/wzp860263925/article/details/51367486