Solidity Programming - function

Question

pragma solidity ^0.4.0;
contract crr019_week4assignment {
// Student Account Structure
struct StudentAccount {
string Username;
address Metamask;
uint Age;
string EmailAddress;
bool BlockchainTrackEnrolled;
StudentType ClassLevel;
}
constructor() public {
}
StudentAccount [] public StudentInformation;
enum StudentType {
Freshman,
Sophomore,
Junior,
Senior,
Graduate
}
function AddStudent (string _Username, address _Metamask, uint _Age, string _EmailAddress, bool _BlockchainTrackEnrolled, StudentType _ClassLevel ) public {
// Anything inside of this function can use any of the parameters
StudentAccount memory NewStudent = StudentAccount({Username:_Username, Metamask:_Metamask, Age:_Age, Email:_EmailAddress, BlockchainTrackEnrolled:_BlockchainTrackEnrolled, Student:_ClassLevel});
}
}
Getting TypeError: Named argument does not match functions declaration.

Answer 1

what you should correct in your smartcontract
you must add memory after your string arguments
replace email and student with EmailAddress and ClassLevel
correct code

Answer 2

You have a typo when you are creating your struct instance : Use EmailAddress instead of Email.
Each property name used in your json ({}) must match names declared in the struct.

Answer 3

The following correction has to be done in arguments and function declaration:
instead of email you must use EmailAddress
instead of Student you must use ClassLevel
for string arguments you should use memory
The corrected segment is as follow:
function AddStudent (string memory _Username, address _Metamask, uint _Age, string memory _EmailAddress, bool _BlockchainTrackEnrolled, StudentType _ClassLevel ) public {
// Anything inside of this function can use any of the parameters
StudentAccount memory NewStudent = StudentAccount({Username:_Username, Metamask:_Metamask, Age:_Age, EmailAddress:_EmailAddress, BlockchainTrackEnrolled:_BlockchainTrackEnrolled, ClassLevel:_ClassLevel});

Answer 4

Inside function AddStudent correct the naming convention from email to EmailAddress. Also you can add memory after each string variable(not mandatory).

Answer 5

Naming should be done properly.
Corrected code :
pragma solidity 0.6.12;
contract crr019_week4assignment {
// Student Account Structure
struct StudentAccount {
string Username;
address Metamask;
uint Age;
string EmailAddress;
bool BlockchainTrackEnrolled;
StudentType ClassLevel;
}
constructor() public { }
StudentAccount [] public StudentInformation;
enum StudentType {
Freshman,
Sophomore,
Junior,
Senior,
Graduate
}
function AddStudent (string memory _Username, address _Metamask, uint _Age, string memory _EmailAddress, bool _BlockchainTrackEnrolled, StudentType _ClassLevel ) public {
// Anything inside of this function can use any of the parameters
StudentAccount memory NewStudent = StudentAccount({Username:_Username, Metamask:_Metamask, Age:_Age, EmailAddress:_EmailAddress, BlockchainTrackEnrolled:_BlockchainTrackEnrolled, ClassLevel:_ClassLevel});
}
}

Answer 6

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
contract crr019_week4assignment {
// Student Account Structure
struct StudentAccount {
string Username;
address Metamask;
uint Age;
string EmailAddress;
bool BlockchainTrackEnrolled;
StudentType ClassLevel;
}
constructor() {}
StudentAccount [] public StudentInformation;
enum StudentType {
Freshman,
Sophomore,
Junior,
Senior,
Graduate
}
function addStudent (string memory _Username, address _Metamask, uint _Age, string memory _EmailAddress, bool _BlockchainTrackEnrolled, StudentType _Classlevel) public {
StudentAccount memory NewStudent = StudentAccount(_Username, _Metamask, _Age, _EmailAddress, _BlockchainTrackEnrolled, _Classlevel);
StudentInformation.push(NewStudent);
}
}