string::npos
#include <iostream>
#include <string>
using std::cout;
using std::endl;
using std::string;
int main() {
string text = "asdf asdf asdf asdf asdf";
size_t start = text.find_first_not_of("df");
cout << start;
cout << string::npos;
return 0;
}04294967295
use iterator
#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
int main()
{
string str1("Strings handling is easy in C++");
string::iterator p;
unsigned int i;
// use iterator
p = str1.begin();
while(p != str1.end())
cout << *p++;
cout << endl;
return 0;
}Strings handling is easy in C++
Using an iterator to output a string
#include <iostream>
using std::cout;
using std::endl;
#include <string>
using std::string;
int main()
{
string string1( "Testing iterators" );
string::const_iterator iterator1 = string1.begin();
cout << "string1 = " << string1
<< "\n(Using iterator iterator1) string1 is: ";
while ( iterator1 != string1.end() )
{
cout << *iterator1;
iterator1++;
}
cout << endl;
return 0;
}string1 = Testing iterators
(Using iterator iterator1) string1 is: Testing iterators
