Template Specialization

Lab C++ Advanced 30 points

Write template <typename T> string describe(T x) that returns value: X, and a full specialization for bool returning flag: yes|no. Read an int, a double and a bool (0/1) and describe each.

Input

One line: int double bool.

Output

Three lines.

Example

Input

42 3.5 1

Output

value: 42
value: 3.5
flag: yes

Sample input available Sample output available

Editor

C++

Hints

template <> string describe<bool>(bool x) replaces the general version for bool.

Solution explanation

Specialization customises a template for one particular type.

Show solution

#include <iostream>
#include <sstream>
#include <string>
using namespace std;

template <typename T>
string describe(T x) {
    ostringstream out;
    out << "value: " << x;
    return out.str();
}

template <>
string describe<bool>(bool x) {
    return string("flag: ") + (x ? "yes" : "no");
}

int main() {
    int i;
    double d;
    int b;
    cin >> i >> d >> b;
    cout << describe(i) << "\n" << describe(d) << "\n" << describe(b != 0) << "\n";
    return 0;
}

Output

Answer