对于C风格字符串，您可以使用 strtok（）来做到这一点。您也可以使用 sscanf（）

With C-style strings you can use strtok() to do this. You could also use sscanf()

但是，因为你在处理C ++，你可能想坚持使用内置的std :: string函数。因此，你可以使用find（）。 Find有一个表单，它接受第二个参数，它是开始搜索的偏移量。所以你可以找到（'：'）找到第一个实例，然后使用find（'：'，firstIndex + 1）来查找下一个实例，其中firstIndex是第一次调用find（）时返回的值。

But since you're dealing with C++, you probably want to stick with built in std::string functions. As such you can use find(). Find has a form which takes a second argument which is the offset to start searching. So you can do find( ':' ) to find the first instance, and then use find( ':', firstIndex+1 ) to find the next instances, where firstIndex is the value returned by the first call to find().