如何让C++'tally up'结果并制定计划？

我正在做一个练习，我必须编写一个程序，该程序将根据用户对一系列是或否问题的回答来建议订阅计划。

该练习基于以下图表： https://i.stack.imgur.com/W2fL0.jpg

这是我的代码，所以你可以看到我到目前为止做了什么......

// Firstly, Welcome the client!
cout << " Welcome to the Wordpress subsciption sugesstion Tool!" << endl;
cout << " In order to find the right plan for you, we'll need to ask you a series of questions!" << endl;
cout << " Answer the following questions using 'y' or 'n' keys when prompted." << endl;
// secondly, Present the series of questions and prompt the user for input.
cout << 1.) Would you like to utilize free themes? (y/n)" << endl;
cin >> answer;
if(answer = 'y')
{
freeTheme = true;
}
else
{
freeTheme = false;
}
cout << "tn 2.) Would you like to customize your themes? (y/n)" << endl;
cin >> answer;
if(answer = 'y')
{
customDesign = true;
}
else
{
customDesign = false;
}

cout << "tn 3.) Will you be needing Search Engine Optimization? (y/n)" << endl;
cin >> answer;
if(answer = 'y')
{
seoTools = true;
}
else
{
seoTools = false;
}

cout << "tn 4.) Is live support important for you? (y/n)" << endl;
cin >> answer;
if(answer = 'y')
{
liveSupport = true;
}
else
{
liveSupport = false;
}
cout << "tn 5.) How much data will you need to host? 3GB, 6GB, 13GB, or unlimited(999GB)?" << endl;
cin >> storageCapacity;
if(storageCapacity = 3)
{
costPerMonth = 0.00;
}
else if (storageCapacity = 6)
{
costPerMonth = 5.00;
}
else if (storageCapacity = 13)
{
costPerMonth = 8.00;
}
else if (storageCapacity = 999)
{
costPerMonth = 25.00;
}
cout << 6.) How many years are you interest in hosting for?" << endl;
cin >> years;

这可能看起来有点混乱，但我正在绞尽脑汁试图解决它。你觉得怎么样？我走在正确的轨道上吗？我缺少哪些语句/运算符？我应该尝试合并开关语句吗？