C++ String capacity() function

C++ String capacity() function tutorial for beginners and professionals with examples on constructor, if-else, switch, break, continue, comments, arrays, object and class, exception, static, structs, inheritance, aggregation etc.

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C++ String capacity()

This function gives the current size of the allocated space for the string.

Capacity of the string is not necessarily equal to the size or length of the string. If it is greater, it means extra space is allocated for other string operations.

Syntax

Consider a string str. Syntax would be:

str.capacity();

Parameter

This function does not contain any parameter.

Return value

It returns the size of the currently allocated space for the string.

Example

Let's see a simple example.

#include<iostream>
using namespace std;
int main()
{
string str = "Hello java program";
cout<<"capacity of the string is : "<<str;
return 0; 
}

Output:

capacity of the string is : 18

In this example, we find capacity of the string.

Next TopicC++ Strings

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