1
#include<iostream>
using namespace std;
int main(){
char n;
while(1)
{
cout<<"Menu:A(dd) D(elete) S(ort) Q(uit),Select one"<<endl;
cin>>n;
if(n==‘A‘)
cout<<"数据已经增加"<<endl;
else if(n==‘D‘)
cout<<"数据已经删除"<<endl;
else if(n==‘S‘)
cout<<"数据已经排序"<<endl;
else if(n==‘Q‘)
break;
else
cout<<"wrong selection"<<endl;
}
return 0;
}
2
#include<iostream>
using namespace std;
int main(){
int n=2;
for(n=2;n<=100;n++)
{
int m=0;
for(m=2;m<=n;m++)
{
if(n%m==0)
{
break;
}
}
if(n==m)
{
cout<<n<<endl;
}
}
return 0;
}
#include<iostream>
using namespace std;
int main()
{
int m=2,n=1;
cout<<m<<" ";
do
{
int i;
for(i=2;i<m;i++)
{
if(m%i==0)
{
break;
}
else if(m%i!=0&&i==m-1)
{
if(n%5==0)
{
cout<<endl;
}
cout<<m<<" ";
n++;
}
}
m++;
}
while(m<=100);
return 0;
}
#include<iostream>
using namespace std;
int main(){
cout<<"几种颜色:";
int tnumber=0, number=0, i=0, s=0, x=0, k=0;
cin>>tnumber;
cout<<"几种颜色:";
cin>>number;
int sm=tnumber;
int st=number;
while(st>1){
sm=sm*(tnumber-1);
tnumber--;
st--;
}
int xm=1;
for(i=1;i<number;i++){
xm=xm*(i+1);
}
k=sm/xm;
cout<<"有"<<k<<"种取法!";
}
#include<iostream.h>
void main()
{
inti,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);
}
原文:https://www.cnblogs.com/hi-ypy/p/10562366.html