PPT《The C++ Programming Language》

return 1;

}If a reference is used for performance in parameters, and will not be changed, using keyword const is recommended (for safe)int f(const int& ri);

#define MAX 5000;

const int MAX = 5000;

const is also recommended to replace the #define macro, for the visibility in symbol table during compiling Reviewing C in C++ (cont.) Overview of the constconst int*p =&i;

int const* p =&i;

int* const p =&i;

const int* const p=&i;

const X& X::clone();

int X::f() const;

Reviewing C in C++ (cont.) class CExap class CExap{public:public:int m_iX;

int m_iX;

CExap v;

CExap* v;

v.m_iX = 0;

v->m_iX = 0;

. is after an object, -> is after a pointer (or iterator) Reviewing C in C++ (cont.) int main(int argc, char* argv[]) {};

argc passes the number of elements in the argv array, argv[] are the character sub-sequences separated by spaces from the command lineargv[

0 ] is the path and program name, the real arguments start from argv[

1 ] Let's compare these #include void main(){ int j;

int v[

5 ] = {1,2,3,4,5}for (j = 0;

j < 5;

j+printf("%d\n", v[ j #include #include using namespace std;

int main(){ vector< int > v;

for (int j = 0;

j < 5;

j+v.push_back(j + 1)for (int j = 0;

j < v.size();

j+cout , cout