std::basic_string::substr

From Cppreference

Returns a substring [pos, pos+count). If the requested substring lasts past the end of the string, or if count == npos, the returned substring is [pos, size()).

If pos > size(), out_of_range is thrown.

[edit] Parameters

[edit] Return value

string containing the substring [pos, pos+count).

[edit] Complexity

linear in count

[edit] Example

#include <string>
#include <iostream>
 
int main()
{
    std::string a = "0123456789abcdefghij";
 
    std::string sub1 = a.substr(10);
    std::cout << sub1 << '\n';
 
    std::string sub2 = a.substr(5, 3);
    std::cout << sub2 << '\n';
 
    std::string sub3 = a.substr(12, 100);
    std::cout << sub3 << '\n';
 }

Output:

abcdefghij
567
cdefghij

[edit] See also