Programm errror

#1

if i run this code against custom input ,i am getting a correct answer,But while submitting this code i am getting test case is failed please explain what is the error in this code
#include
using namespace std;
main()
{
int n,max=0;
cin>>n;
int a[n];
for(int i=0;i<=n;i++)
{
cin>>a[i];
}
for(int i=0;i<=n;i++)
{ if(max<=a[i])
{
max=a[i];
}
else if(i==n)
{
break;
}
}
cout<<max;
}

#2

@tharun
if all numbers in the array are negative, your code will give answer as 0. Dry run and check it yourself.
So Change max =0 to max=INT_MIN
You have to include another header file for this #include< climits >

#3

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