dividing a string into other variables

[Lefteris Eleftheriou]

hi
this is my first post and i would really like your help

my input would be in this form
category name ! type1 quantity av_mode ! type2 quantity av_mode ! typeM quantity av_mode

i need to divide this string into variables I've created

this is what i have so far but i can not think of a way to do this

  struct type
{
	string name;
	int quantity;
	char av_mode;
};
struct product
{
	string name;
	struct type type;
};
struct category
{
	string name;
	struct product product;
};

string input;
getline(cin, input, '!');

thanks in advance