Convert fahrenite to celsius

this is my piece of code i could have done it without function but i wante to try it out with function only can you please tell me what i am doing wrong here

there are many syntax error in this code

cin>>min>>endl;
		cin>>max>>endl;
		cin>>t>>endl;

using cin we take input
endl is not take as input
so correct statement will be

cin>>min;
		cin>>max;
		cin>>t;

Mistake 2

	cout<<CtoF(min, max, t);

this is also incorrect because return type of function is void
correct statement is
CtoF(min, max, t)
just call function

Modified Code