In C++ (const parameters and integer arithmetic), determine the output of the following code. Consider integer operator precedence and the final multiplication by 0.2. #include<iostream.h> const double CuriousTabConstant(const int, const int = 0); int main() { const int c = 2; cout << CuriousTabConstant(c, 10) << " "; cout << CuriousTabConstant(c, 20) << endl; return 0; } const double CuriousTabConstant(const int x, const int y) { return ( (y + (y * x) * x % y) * 0.2 ); }

Introduction / Context: The challenge is to simplify a mixed expression with integer multiplication, modulus, and then a scaling by a floating constant. Because of integer properties, one term collapses to zero, leaving a simple proportional result based solely on y.

Given Data / Assumptions:

• x = 2; calls use y = 10 and y = 20.
• Expression: y + (y * x) * x % y all in integer arithmetic, then multiplied by 0.2.

Concept / Approach: For any integers k and nonzero y, (k * y) % y = 0. Here (y * x) * x is clearly a multiple of y, so the modulus term vanishes. The remaining value is simply y, and the final multiplication by 0.2 yields y * 0.2.

Step-by-Step Solution:

Verification / Alternative check: Replacing 0.2 with 1.0/5.0 shows the same result; double formatting by default often prints without fixed decimals (e.g., "2 4").

Why Other Options Are Wrong:

• 20 40 or 10 20: Ignore the final scale factor.
• 20 4.50: Arithmetic is not producing 4.5 for the second value.
• Compile-time error: Code is legal and compiles.

Common Pitfalls: Misapplying operator precedence or assuming modulus binds differently; here parentheses make the intended grouping explicit.

Final Answer: The program will print the output 2 4.