无休居士的博客

#include <iostream>using namespace std;int main(){ int i=15; int *p=&i;//这里不同于 int *p; p=new int； *p=15;之类的,这里是取址 int &q=i; cout<<"i is "<<i<<endl; cout<< "*p is"<<*p<<endl;

**求3-100之间的素数**#include <iostream>#include <math.h>using namespace std;int main(){ int n,i; for(n=3;n<=100;n++) { for(i=2;i<sqrt(n);i++) if(n%i==0) break

插入排序void insertsort(int a[],int n){ int i,j,temp; for(i=1;i<n;i++) { j=i; temp=a[i]; while(j>0&&temp<a[j-1])//temp { a[j]=a[j-1]; j-

//虚基类的声明#include<iostream>using namespace std;class Base{public:Base(){ a=5; cout<<"Base a="<<a<<endl;}protected:int a;};class Base1:virtual public Base{public:Base1(){ a=a+10