Question about the getline function

I am trying to use the getline function in order to have a user input a students name. The code is as followed.

The Structure:

Code:

struct student // the student structure meant to hold all student data // in a linked list fashion { char studentNames[maxStudents][lnName]; // student names int sectionNum; // section the student is in float project[11]; // student's projects float test[3]; // students's tests float quiz[5]; // students's quizzes student *nxt; // pointer to next student }; // end struct student

The Function:

Code:

void getStudentNames (char pgmID[], char title[], char subTitle[], char gradebookName[] ) { // Declare local vbls for holding data that is inputted by the user. int numStudents; student *temp; // Display title and sub-title lines. system ("cls"); cout << pgmID << setw ( 40 + strlen(title) / 2 - strlen(pgmID)) << title << endl; cout << setw ( 40 + strlen(subTitle) / 2) << subTitle << "\n\n\n"; // If warranted, open the file for output. ofstream gradeBookFile; gradeBookFile.open (gradebookName, ios::out); // Input data for this item from the user and output it to the database. cout << "\t\tPlease enter the number of students: "; cin >> numStudents; cin.ignore(); // Input data for this item from the user and output it to the database. for ( int count = 0; count < numStudents; count++ ) { cout << "\n\t\tPlease enter student name (L F MI): "; temp = new student; cin.getline ( temp[count] ->studentNames, lnName ); gradeBookFile << temp->studentNames[count] << endl; } // end for ( int count = 0 .... // Close the file, return to sender. gradeBookFile.close(); } // end getStudentNames (...

The error is at the getline function.

I don't know how to properly do this :( HELP PLEASE!

And the error is.... ????

By the way, your struct should look like this:

Code:

struct student // the student structure meant to hold all student data // in a linked list fashion { char studentNames[maxStudents][lnName]; // student names int sectionNum; // section the student is in float project[11]; // student's projects float test[3]; // students's tests float quiz[5]; // students's quizzes struct student *nxt; // pointer to next student }; // end struct student

The error is :

error C2819: type 'student' does not have an overloaded member 'operator ->'

and also

error C2232: '->student::studentNames' : left operand has 'struct' type, use '.'

I really need help!

I am home sick today - so this is the best I care to offer right now.

When working with structs, when you have one statically allocated, you use dot notation to access its members.

When working with pointers to structs, you use arrow notation.

Quote:

Originally Posted by Dino

I am home sick today - so this is the best I care to offer right now.

When working with structs, when you have one statically allocation, you use dot notation to access its members.

When working with pointers to structs, you use arrow notation.

Thanks man, I will try that tonight and let you know how it works out :)

Quote:

Originally Posted by Dino

And the error is.... ????

By the way, your struct should look like this:

Code:

struct student // the student structure meant to hold all student data // in a linked list fashion { char studentNames[maxStudents][lnName]; // student names int sectionNum; // section the student is in float project[11]; // student's projects float test[3]; // students's tests float quiz[5]; // students's quizzes struct student *nxt; // pointer to next student }; // end struct student

Huh, should be fine in C++ without the struct keyword in front of student. In C yes that would be a problem.

Code:

for ( int count = 0; count < numStudents; count++ ) { cout << "\n\t\tPlease enter student name (L F MI): "; temp = new student; cin.getline ( temp[count] ->studentNames, lnName );

You aren't creating arrays of students here so why are you attempting to access them like temp is an array? You are creating single instances each time through the loop. You also aren't doing anything to link the nodes together into a linked list.

Any errors in the above I attribute to the Vicodin I'm currently taking... good stuff.

Quote:

Originally Posted by hk_mp5kpdw

Huh, should be fine in C++ without the struct keyword in front of student. In C yes that would be a problem.

Code:

for ( int count = 0; count < numStudents; count++ ) { cout << "\n\t\tPlease enter student name (L F MI): "; temp = new student; cin.getline ( temp[count] ->studentNames, lnName );

You aren't creating arrays of students here so why are you attempting to access them like temp is an array? You are creating single instances each time through the loop. You also aren't doing anything to link the nodes together into a linked list.

Any errors in the above I attribute to the Vicodin I'm currently taking... good stuff.

I just want to be able to type in a full name and grabbing a char that is declared in the structure like, for example,

Billy Bob M

Then it would be
temp->studentNames[count]
The index comes after the actual variable whose elements you want to access.
Disclaimer: I have not checked this for rightness. I am simply explaining how it should be done.