sizeof operator

general
1 
can any one please tell we whats wrong with sizeof operator
here is the code

#include
#include
#include
#include
using namespace std;
int max(int a,int b)
{
	return a>b?a:b;
}
int longestSeq(int input1[])
{
	int m=0;
	int n=sizeof(input1)/sizeof(int);
	cout<<n<<endl;
	int lis[n];
	for(long long i=0;i<n;i++)
	{
		lis[i]=1;
	}
	for(long long i=1;i<n;i++)
	{
		for(long long j=0;jinput1[j] && lis[i]<lis[j]+1)
			lis[i]=lis[j]+1;
		}
	}
	for(long long i=0;i<n;i++)
	{
		m=max(m,lis[i]);
	}
	return m;
}
int main()
{
	int a[]={10,22,9,33,21,50,41,60,80,100,120};
	cout<<longestSeq(a)<<endl;
}
2

Can you specify what problems you are facing.

3

sizeof is used to find the size in bytes of the structure type provided. You have provided a pointer to a structure which isn’t a type but an instance of a type.