class StudDetails { var stname: String! var mark1: Int! var mark2: Int! var mark3: Int! init(stname: String, mark1: Int, mark2: Int, mark3: Int) { self.stname = stname self.mark1 = mark1 self.mark2 = mark2 self.mark3 = mark3 } } let stname = "swift" let mark1 = 98 let mark2 = 89 let mark3 = 76 let sds = StudDetails(stname:stname, mark1:mark1, mark2:mark2, mark3:mark3); print(sds.stname) print(sds.mark1) print(sds.mark2) print(sds.mark3)