人生如路

C++ Knowledge in Coding InterviewSome useful C++ knowledge and examples that may be used/asked in a coding interview For more articles like this, please visithttps://medium.com/@yangpeng_techTab...

利用C++中的bitset来检查生成的随机数是否重复。

#include #include #include using namespace std;template class CMatrix{public: CMatrix(); CMatrix(int row, int col); CMatrix(int row, int col, T *data); CMatrix(CMatrix& m2);

Boost库的介绍：http://www.boost.org/要想在mac上使用boost库写应用程序，首先需要安装boost。安装步骤：参考官网教程http://www.boost.org/doc/libs/1_57_0/more/getting_started/unix-variants.html1.下载 Download boost_1_57_0.tar.bz2.2.

#include using namespace std;void Malloc(int *&ip, int val){ //wrong //int *p = ip; //p = new int(val);//ip is still NULL //ok int *p = new int(val); ip = p; //ok ip = new int(val);//ok

char c[] = "abcde";cout << sizeof(c)<<endl; //output 6cout << strlen(c) << endl;//output 5------------------------------------------------char c[10] = "abcde";cout << sizeof(c)<<endl; //output 10

int main(){ char c = '\n'; char d = '\0'; char e = 0; char f = '0'; printf("%d\n",c);//10 printf("%d\n",d);//0 printf("%d\n",e);//0 printf("%d\n",f);//48 char *p = new char[10];//ok //char

int main(){ char c,d; scanf("%c",&c); scanf("%c",&d);//如果输入了一个字符后按回车，则d为回车 //scanf("%c%c",&c,&d);//同上 printf("%c ",c); printf("%c ",d); int N; int M; scanf("%d",&N); scanf("%d",&M); char