valarray size() function in C++
The size() function is defined in valarray header file. This function is used to find the size of valarray and returns the size of valarray.
Syntax:
size_t size() const;
Parameter: This function doesn’t takes any parameter.
Returns: This function returns the number of element in valarray.
Below programs illustrate the above function:
Example 1:-
#include <bits/stdc++.h>
using namespace std;
int main()
{
valarray< int > varr = { 20, 40, 60, 80 };
cout << "The size of valarray is: " ;
cout << varr.size();
cout << endl;
return 0;
}
|
Output:
The size of valarray is: 4
Example 2:-
#include <bits/stdc++.h>
using namespace std;
int main()
{
valarray< int >
varr = { -20, 40, -50, 60, 80, 0, 0 };
cout << "The size of valarray is: " ;
cout << varr.size();
cout << endl;
return 0;
}
|
Output:
The size of valarray is: 7
Last Updated :
23 Oct, 2018
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