struct studentDetails {  
   var stnames: String  = "Ram"
   var marks1: Int   = 89
   var marks2: Int   = 90
   var marks3: Int  = 60
 
  func  StDetails() {
       print("Name is \(stnames) & Marks in physics \(marks1) in chemistry \(marks2) &  in  Maths is \(marks3)")
     
     
   }  
} 
var std =  studentDetails(stnames: "Rak" , marks1 : 30 , marks2 : 40 , marks3 : 70)
std.StDetails()