can you use functions in class code example

Example: Using functions in Class

class Student{
    int scores[5];
    public:
    void input(){
        for(int i=0; i<5; i++){
            cin >> scores[i];
        }
    }
    int calculateTotalScore(){
        int total = 0;
        for(int i=0; i<5; i++){
            total += scores[i];
        }
        return total;
    }
};