C++作业5

#include <iostream>
#include<cstdio>
using namespace std;
int main()
{
char str[50];
int d=0,x=0,y=0,z=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')
{
y++;i++;
}
else
{
z++;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"<<y<<endl;
cout<<"其他字符个数为"<<z<<endl;
return 0;
}

#include<iostream.h>
int main()
{
cout<<"请输入十个数:";
int a[10],i,x=0,y=0;
for(i=0;i<10;i++)
{
cin>>a[i];
if(a[i]>0)
x=x+a[i];
if(a[i]<0)
y=y+a[i];
}
cout<<"正数的和为"<<x<<endl;
cout<<"负数的和为"<<y<<endl;
return 0;
}

#include<iostream>
using namespace std;
int main()
{
cout<<"请输入十个数:";
int a[10],b[10],i,j,k=0,flag;
for(i=0;i<10;i++)
cin>>a[i];
for(i=0;i<10;i++)
{
flag=1;
for(j=0;j<10;j++)
{
if(i==j)continue;
if(a[i]==a[j])
flag=0;
}
if(flag!=0)
b[k++]=a[i];
}
cout<<"x数组为";
for(i=0;i<10;i++)
cout<<a[i]<<" ";
cout<<endl;
cout<<"y数组为";
for(i=0;i<k;i++)
cout<<b[i]<<" ";
cout<<endl;
return 0;
}