How to multiply cpp

 #include<simplecpp>

main_program{

int d;

cin>>d;

int N;

cin>>N;

int carry = 0;

repeat(N){

    int m_i;

    cin>>m_i;

    int prod;

    prod = m_i * d + carry;

    int p_i = prod % 10;

    carry = prod/10;

    cout<<p_i<<endl;

        }

    if (carry != 0) cout<<carry<<endl;

}