C++ p63作业 1

p63 2-28（1）

include

using namespace std;
int main()
{
cout<<"Menu:A(dd) D(elete) S(ort) Q(uit),Select one:"<<endl;
char a='A',d='D',s='S',q='Q',e;
cout<<"数据已经"<<endl;
while(1)
{
cin>>e;
if(ea)
{
cout<<"增加";
continue;
}
else if(ed)
{
cout<<"删除";
continue;
}
else if(es)
{
cout<<"排序";
continue;
}
else (eq);
{
cout<<"结束";
break;
}
}
return 0;
}

p63 2-28(2)

include

using namespace std;
int main()
{
cout<<"Menu:A(dd) D(elete) S(ort) Q(uit),Select one:"<<endl;
char a='A',d='D',s='S',q='Q',e;
cout<<"数据已经"<<endl;
while(1)
{
cin>>e;
switch(e)
{
case 'A':cout<<"增加";continue;
case 'D':cout<<"删除";continue;
case 'S':cout<<"排序";continue;
case 'Q':cout<<"结束";break;
}
}
return 0;
}

p63 2-29

include

using namespace std;
int main()
{
int i,j,n,m;
i=2;
do
{
m=1;n=i/2;j=2;
do
{
if(i%j==0)
{
m=0;
break;
}
j++;
}
while(j<=n);
if(m)
cout<<i<<" ";
i++;
}
while(i<101);
}