CS 50 Pointers


//  5    <---    
//  k          pk

*pk = 35; // * is de-reference operator, which gets the value where located of the address
==> we go to the address pointed to by pk, and change what we find.
==> k == 35;


// 5  
// k     pk
//    /
// 4
// m
int m;
m = 4;
pk = &m;

the things stored in pk would change to be the address of m, instead of k anymore.
#pointer #& #* #dereference







你可能感興趣的文章

2 - 非同步之Promise串 API

2 - 非同步之Promise串 API

[04] JavaScript 入門 - 強制轉型、Truthy & Falsy、條件式

[04] JavaScript 入門 - 強制轉型、Truthy & Falsy、條件式

npm ERR! enoent ENOENT: no such file or directory, open ... package.json

npm ERR! enoent ENOENT: no such file or directory, open ... package.json






留言討論