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#include <iostream>

#include <cmath>

int index(int x, unsigned p) {

if (p == 0) {

std::cerr << "index(int, unsigned)\n";

return 1;

}

else {

return x * index(x, p - 1);

}

double index(double x, unsigned p) {

std::cerr << "index(double, unsigned)\n";

return pow(x, static_cast<double>(p));

}

int index(...) {

std::cerr << "index(...)\n";

return 0;

}

int main() {

auto a = index(-3, 4);

std::cout << "(-3) ^ 4 = " << a << '\n';

auto b = index(2.5, 2);

std::cout << "2.5 ^ 2 = " << b << '\n';

auto c = index("Hello", "There");

std::cout << c << '\n';

}