Overloading With Different Types

1#include <iostream>
2
3struct Vector3 {
4  float x, y, z;
5
6  // Multiply Vector3 by float
7  Vector3 operator*(float scalar) const {
8    return Vector3{
9      x * scalar, y * scalar, z * scalar
10    };
11  }
12
13  // Multiply Vector3 by int
14  Vector3 operator*(int scalar) const {
15    return Vector3{
16      x * scalar, y * scalar, z * scalar
17    };
18  }
19};
20
21// Allow float * Vector3
22Vector3 operator*(float scalar, const Vector3& vec) {
23  return vec * scalar;  // Reuse the member operator
24}
25
26// Allow int * Vector3
27Vector3 operator*(int scalar, const Vector3& vec) {
28  return vec * scalar;  // Reuse the member operator
29}
30
31int main() {
32  Vector3 vec{1.0f, 2.0f, 3.0f};
33
34  // Using different numeric types
35  Vector3 result1{vec * 2};     // Using int
36  Vector3 result2{vec * 2.5f};  // Using float
37
38  // Using float on the left side
39  Vector3 result3{3.0f * vec};
40
41  std::cout << "Result2: x=" << result2.x
42    << ", y=" << result2.y
43    << ", z=" << result2.z << "\n";
44}