C String詳解 小白專用

#include

"string"

string s =

"hello world!!!"
;

char temp=

"hello world!!!"
;string s = temp;

string s =

"hello world!!!"
;char
*temp =
(char
*)s.
c_str()
;//此處一定要加強制型別轉化，c_str()返回的是乙個臨時指標,不能對其進行賦值操作

string s =

"hello world!!!"
;int n = s.
size()
;

string s1 =

"hello world!!!"
;string s2 = s1.
substr
(start,len)
;//起始於start，長度為len

string s1 =

"aabbaa"
;string s2 =
"aabbaa1"
;cout
(s2)

string s1 =

"aabbaa"
;string s2 =
"aabbaa1"
;s1.
(s2)
;//方法一
s1+=s2;
//方法二

string s =

"aabbaa"
;string s2 = s.
substr
(n);
//去掉前n個字元