UART Frame Builder

#include <iostream>
#include <cstdint>
using namespace std;

// Define class Frame with:
// - uint8_t buffer[16]
// - int size
// - operator+=
// - operator[]
// - getSize()
class Frame{
    uint8_t buffer[16];
    int size;
    public:
    Frame() : size(0){}
    void operator+=(const uint8_t&b){
        buffer[size++]=b;
    }
    uint8_t operator[](int idx)const{
        return buffer[idx];
    }
    int getSize()const{
        return size;
    }
};
int main() {
    int n;
    cin >> n;

    Frame frame;

    for (int i = 0; i < n; i++) {
        int b;
        cin >> b;
        frame += (uint8_t)b;
    }

    for (int i = 0; i < frame.getSize(); i++) {
        cout << (int)frame[i];
        if (i + 1 < frame.getSize()) {
            cout << " ";
        }
    }

    return 0;
}

Solving Approach

 

 

 

 

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Input

4 10 20 30 40

Expected Output

10 20 30 40