C++ - String shrink_to_fit() Function
The C++ string::shrink_to_fit function is used to change the string capacity and makes it equal to the size of the string. This may cause a reallocation, but there will be no effect on string length and content of the string will be unaltered.
Syntax
void shrink_to_fit();
Parameters
No parameter is required.
Return Value
None.
Time Complexity
Constant i.e, Θ(1).
Example:
In the below example, the string::shrink_to_fit function is used to change the string capacity and makes it equal to the size of the string MyString.
#include <iostream> #include <string> using namespace std; int main (){ string MyString (50, 'x'); cout<<"MyString capacity is: "<<MyString.capacity(); MyString.resize(10); cout<<"\nMyString capacity is: "<<MyString.capacity(); MyString.shrink_to_fit(); cout<<"\nMyString capacity is: "<<MyString.capacity(); return 0; }
The output of the above code will be:
MyString capacity is: 50 MyString capacity is: 50 MyString capacity is: 10
❮ C++ - String Functions