Based on Consortium Blockchain to Design a Credit Verifiable Cross University Course Learning System

Algorithm 5

Chaincode for the teacher to add course grades to the student account.

(1)	func (t ^∗Chaincode) AddGrade(APIstub shim.ChaincodeStubInterface, args []string) peer.Response {
(2)	if len(args) ! = 2 {
(3)	return shim.Error(“Incorrect number of arguments. Expecting 2″)
(4)	}
(5)	studentAsBytes, _: = APIstub.GetState(args[0])
(6)	student:= Student{}
(7)	json.Unmarshal(studentAsBytes, &student)
(8)	student.Grade = args[4].
(9)	studentAsBytes, _ = json.Marshal(student)
(10)	APIstub.PutState(args[0], studentAsBytes)
(11)	return shim.Success(nil)
(12)}