9.23 Written summary

Some small things the C language, long forgotten almost useless:

#include<iostream>
using namespace std;
int main()
{
    int m = 5;
    int n = 6;
    n += n -=m *= n;
    cout <<"n:"<< n<<endl;
    int k = 0;
    char a;
    char b[] = "hello";
    char* p = b;
    cout << "a:"<<sizeof(a)<<"b:"<<sizeof(b)<<"c:"<<sizeof(p);
    return 0;

 

+ = - = = * from right to left such

char type of pointer, the sizeof () result is 4, sizeof length of a character array 5 "hello" result is 6, because the '\ 0' End 

 

 

 

Loop assignment, write right.