Global variable “count” ambiguous

Question

#include 
using namespace std;

int count = 0, cache[50];

int f(int n)
{  
    if(n == 2) count++;
    if(n == 0 || n==1) return n;
    else if (ca         


        

Answer 1

I think I may have figured this out. I have found that removing the using namespace std doesn't help, but when I change the name of the variable to something which is less common, like count can be changed to cnt or some personal versions like knt or isCycle. I don't exactly know what is the reason behind this.

Answer 2

yeah idk but changing the name to less common variable name works fine in case of mine

Answer 3

The problem is all because of the second line here:

#include <algorithm>
using namespace std;

The line using namespace std brings all the names from <algorithm> which also has a function called count, and in your code, you've declared a variable count. Hence the ambiguous error.

The solution is to never write using namespace std. It is bad bad bad.

Instead, use std::cout, std::cin, std::endl, std::count and so on, in your code.