reference operator[]( size_type pos ); | (1) | |
const_reference operator[]( size_type pos ) const; | (2) |
Returns a reference to the character at specified location pos
. No bounds checking is performed.
1) If pos == size() , the behavior is undefined. 2) If pos == size() , a reference to the character with value CharT() (the null character) is returned. | (until C++11) |
If For the first (non-const) version, the behavior is undefined if this character is modified. | (since C++11) |
Parameters
pos | - | position of the character to return |
Return value
Reference to the requested character.
Complexity
Constant.
Example
#include <iostream> #include <string> int main() { { std::string const c("Exemplar"); for (unsigned i = 7;i != 0; i/=2) std::cout << c[i]; } std::cout << '\n'; { std::string s("Exemplar "); s[s.size()-1] = 'y'; std::cout << s; } }
Output:
rmx Exemplary
See also
access specified character with bounds checking (public member function) |
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