Help me in solving GSC02 problem

help
,
1

My issue

while i click on submit button below the code it is saying that The contest problem is not available for accepting solutions.

My code

//Click 'Submit' to view the result
#include <iostream>
#include <string>
using namespace std;

int main() 
{
 int a = -5;          // Integer variable
 cout<<a<<endl;

 float b = 4.0;         // Float variable
 cout<<b<<endl;

 string s = "abcd" ;  // String variable
 cout<<s<<endl;

 int ar[4]={7,8,9,10};   // Integer array
cout<<ar[2];

  return 0;
}

Learning course: Solve Programming problems using C++
Problem Link: Data Types in Solve Programming problems using C++