Overloading and Default Parameters

Multiple Versions of the Same Function

int    area(int side)     { return side * side; }
double area(double r)     { return 3.14159 * r * r; }
int    area(int w, int h) { return w * h; }

cout << area(4);       // 16    (int)
cout << area(2.0);     // 12.56 (double)
cout << area(3, 5);    // 15    (two ints)

Default Parameters

Parameters with defaults are optional at call sites:

string greet(string name, string prefix = "Hello") {
    return prefix + ", " + name + "!";
}
greet("Alice");          // "Hello, Alice!"
greet("Alice", "Hi");   // "Hi, Alice!"

Default parameters must come last in the list.

Your Task

Write repeat(string s, int times = 2) that concatenates s exactly times times.
Example: repeat("ha", 3) → "hahaha"   repeat("ab") → "abab"