4 template <typename T> struct Num {  struct
8   Num(T value) : value_(value) {}  in Num()  argument
15     friend Num operator*(const Num &a, const Rep &n) {  in operator *()  argument
16       Num x = 0;  in operator *()
23   friend Num operator+(const Num &a, const Num &b) {  in operator +()
27   Num& operator+=(const Num& b) {  in operator +=()  argument
46   Num<int> left = -1;  in calc1()
47   Num<int> right = 1;  in calc1()
48   Num<int> result = left + right;  in calc1()
53   Num<int> x = 3;  in calc2()
54   Num<int>::Rep<char> n = (char) 10;  in calc2()
55   Num<int> result = x * n;  in calc2()