std::find()处理字符

vector<string>strs;

vector<string>::iterator  itr;

string s1="this is test";

string s2="this";

string s3="is";

strs.push_back(s1);

strs.push_back(s2);

strs.push_back(s3);

itr=find(strs.begin(),strs.end(),"a test");

if(!(strs.end()==itr))

{

        cout<<*itr<<endl;

}

//字符串中找单个字母

char*buf="this is test";

char*found=find(buf,buf+12,'s');    //12是串长度

if(found<buf+12) 

{

cout<<*found<<endl;

}

else

cout<<"not found"<<endl;

//字符串找子串

size_t ok=s1.find(s2);

if(ok!=-1)

{

cout<<"ok:"<<ok<<endl;

string subs2=s1.substr(ok,s2.size());

}

else

cout<<"none"<<endl;