C++ String reserve
This function requests a change in capacity.
Syntax
Consider a string labeled as str and let l denote the intended length of this string. The syntax for this scenario is:
Example
str.reserve(l);
Parameter
l is the planned length for the string
Note: capacity of the string can be greater than or equal to 'l'.
Return value
It does not return any value.
Example
Let's see the simple example.
Example
#include<iostream>
using namespace std;
int main()
{
string s="Computer Science Technology";
cout<<?Capacity is :?<<s.capacity()<<'\n';
s.reserve(33);
cout<<?Now,capacity is :?<<s.capacity();
return 0;
}
Output:
Output
Capacity is 27
Now,capacity is : 54
In this instance, we can see how the size of the string changes when utilizing the reserve method.
