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Hello I would like a help with this exercise code. This is my first time trying to ask a question here.
When I try to compile the file with the member functions Gradebook.cpp or the file containing the main function(_fig03_17.cpp_) is returned with a compilation error as shown in the images at the end of the post.
I cannot solve this problem nor understand why this error is happening.
Header file with the name of Gradebook. h (containing the prototypes of the member functions)
// Figura 3.15: GradeBook.h
// Definição de classe GradeBook apresenta a interface public da
// classe. Definições de função-membro aparecem em GradeBook.cpp.
#include <string>
using std::string;
// definição da classe GradeBook
class GradeBook
{
public:
GradeBook( string );
void setCourseName( string );
string getCourseName();
void displayMessage();
private:
string courseName;
};
Filing cabinet Gradebook.cpp with the class membership functions
// Figura 3.16: GradeBook.cpp
// Implementações das definições de função-membro de GradeBook
// A função setCourseName realiza a validação.
#include <iostream>
using std::cout;
using std::endl;
#include "GradeBook.h" //inclui a definição de classe GradeBook
GradeBook::GradeBook( string name )
{
setCourseName( name ); // valida e armazena courseName
} // fim do construtor GradeBook
void GradeBook::setCourseName( string name )
{
if ( name.length() <= 25 )
courseName = name;
if ( name.length() > 25 )
{
courseName = name.substr( 0, 25 );
cout << "Name \"" << name << "\" exceeds maximum length (25).\n"
<< "Limiting courseName to first 25 characters.\n" << endl;
} // fim do if
} // fim da função setCourseName
string GradeBook::getCourseName()
{
return courseName; // retorna o courseName do objeto
} // fim da função getCourseName
// exibe uma mensagem de boas-vindas ao usuário GradeBook
void GradeBook::displayMessage()
{
// chama getCourseName para obter o courseName
cout << "Welcome to the grade book for\n" << getCourseName()
<< "!" << endl;
} // fim da função displayMessage
File with the main function main()
// Figura 3.17: fig03_17.cpp
// Cria e manipula um objeto GradeBook; ilustra a validação.
#include <iostream>
using std::cout;
using std::endl;
#include "GradeBook.h" // inclui a definição de classe GradeBook
// a função main inicia a execução do programa
int main()
{
// cria dois objetos GradeBook;
// nome inicial de curso de gradeBook1 é muito longo
GradeBook gradeBook1( "CS101 Introduction to Programming in C++" );
GradeBook gradeBook2( "CS102 C++ Data Structures" );
// exibe courseName de cada GradeBook
cout << "gradeBook1's initial course name is: "
<< gradeBook1.getCourseName()
<< "\ngradeBook2's initial course name is: "
<< gradeBook2.getCourseName() << endl;
// modifica courseName do myGradeBook (com uma string de comprimento válido)
gradeBook1.setCourseName( "CS101 C++ Programming" );
// exibe courseName de cada GradeBook
cout << "\ngradeBook1's course name is: "
<< gradeBook1.getCourseName()
<< "\ngradeBook2's course name is: "
<< gradeBook2.getCourseName() << endl;
return 0; // indica terminação bem-sucedida
} // fim de main
I get this error when I try to compile the Gradebook.cpp file
and this with the main fig03_17.cpp function file
