c++ - “class::data member is private” error -

who can check “class::data member private” error.

#include <iostream>  using namespace std;  class marks {     private:             char * name;             char * grade;             float gpa;      public:            char* set_name(char * n)            {                  name=n;                 cout<<"enter name   :";                 cin>>name;                  return name;             }             float set_gpa(float g)            {                  gpa=g;                 cout<<"enter cgpa   :";                 cin>>gpa;                  return gpa;             }             char set_grade()             {                  if(gpa>=3.00&&gpa<=4.00)                 {                     grade[1]='a';                 }                  else if(gpa>=2.00&&gpa<=2.99)                 {                     grade[1]='b';                 }                  else if(gpa>=0.00&&gpa<=1.99)                 {                     grade[1]='f';                 }                  else                 {                     cout<<"error"<<endl;                 }                  return grade[1];            } }m1;   int main() {       char name[20];     char grade[1];     float gpa;      cout<<"=================================="<<endl;     cout<<"         enter information        "<<endl;     cout<<"=================================="<<endl;      m1.set_name(name);     m1.set_gpa(gpa);     m1.set_grade();      cout<<"=================================="<<endl;     cout<<"            result slip           "<<endl;     cout<<"=================================="<<endl;      cout<<"name     : "<<m1.name;     cout<<"gpa      : "<<m1.gpa;     cout<<"grade    : "<<m1.grade;      return 0;  } 

error list

in function 'int main()':| line 9|error: 'char* marks::name' private| line 85|error: within context| line 11|error: 'float marks::gpa' private| line 86|error: within context| line 10|error: 'char* marks::grade' private| line 87|error: within context| line 70|warning: unused variable 'grade'| ||=== build finished: 6 errors, 1 warnings ===| 

have @ definition of class marks :

private:         char * name;         char * grade;         float gpa; 

all 3 members declared private, means can accessed class' member functions - done, example, in set_ functions. if want access data outside of context of class itself, define get_ functions or make data public - depending on want do.

also, since c++, should using std::string strings.