AmbiguousfunctioncallinC++

The following code gives the compilation error of main.cpp: In function ‘int main()’:
main.cpp:18:19: error: call of overloaded ‘print(int, int)’ is ambiguous
print(0, 0);

#include <iostream>

using namespace std;

void print(int, double);
void print(double, int);

int main()
{
    print(0, 0);
    return 0;
}

While the following code does not give the compilation error of function call ambiguity, why so?

#include <iostream>

using namespace std;

void print(double){}
void print(int){}

int main()
{
    print(0);
    return 0;
}

回答