C++PrimerPlus 练习题 循环

第四题   单利和复利

    // 单利投资和复利投资   本金为100元
    int count = 1;
    // 本金
    int principal = 100;
    // A的第一年的收获
    float a_alone = principal * 0.1;
    // B第一年的收获   利息
    float b_double = principal * 0.05;
    // b 收获的总和
    float b_Allhavest = b_double;

    while (b_Allhavest < a_alone * count)
    {
        b_double += b_double * 0.05;
        b_Allhavest += b_double;
        cout << "b的利息-------" << b_double << endl;
        count++;
    }
    
    int year = count / 12;
    int month = count % 12;
    cout<<"\n\n\n\n\n\n\n\n\n"   <<endl;
    cout << "B的利息" <<b_Allhavest << endl;
    cout << "A的利息" << a_alone*count << endl;
    cout << "b的利息" << b_double<< endl;
    cout <<"经历了" <<year <<"年" <<month <<"月， B的所得利息大于A的利息"<< endl;


    return 0;