Type conversion in template

I am using a templated function and a non-templated one. Code is given below

#include <iostream>
using namespace std;

int maxOfTwo1(int a,int b)
{
    return a>b?a:b;
}
template<class T>
T maxOfTwo(T a,T b)
{
    return a>b?a:b;
}
int main()
{
    cout<<maxOfTwo1(3,6.3);//works fine
    cout<<maxOfTwo(3,6.3);//gives error
}

In first function 6.3 is getting converted to 6, but can anyone explain why it doesn't happen in second function also? Second function works also the same just having template.