std::basic_string::substr
From Cppreference
< cpp | string | basic string
basic_string substr( size_type pos = 0,
size_type count = npos ); |
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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.
Contents |
[edit] Parameters
pos | - | position of the first character to include |
count | - | length of the substring |
[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
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copies characters (public member function) |