Solution: Audio Signal Processing

#include <iostream>
int main() {
    double samples[5] = {0.2, 0.4, 0.5, 0.3, 0.1};
    double gain = 1.5;
    // Pointer pointing to the first element
    double* ptr = samples;
    // Pointer pointing to one past the last element (for bounds checking)
    double* end = samples + 5;
    // Iterate as long as ptr is before the end address
    while (ptr < end) {
        *ptr = *ptr * gain; // Modify the value at the current address
        ptr++;              // Move pointer to the next double
    }
    std::cout << "Amplified Signal: ";
    for (double s : samples) {
        std::cout << s << " ";
    }
    std::cout << "\n";
    return 0;
}