no match for operator

[ktk0541]

Hi, somebody please help me solve this, I get an error when compiler looks at while statement. (I've created the file and it is in the same directory, so it is reachable)I looked up online and did't find any solution either.

main.cpp:54: error: no match for 'operator>>' in 'rData >> S[n].main()::Student::name'



#include <iomanip>
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <stdlib.h>
#include <ctime>
using namespace std;


int main()
{
int i = 0;
string line;
int meanGPA = 0;
int meanAge = 0;
int sum;




////////////////////////CREATE TWO STRUCTURES/////////////////////////////////
struct Date
{ int month;
int day;
int year;
} ;
struct Student
{ string name;
Date dob;
double GPA;
}S[200];

////////////////////////READ FROM THE FILE ////////////////////////////////////
ofstream rData;
rData.open ("student.txt", ios::out);


int n = 0;


while(rData >> S[n].name >> S[n].dob.day >>S[n].dob.month >> S[n].dob.year >> S[n].GPA) n++;


//////////////////////PROCESS ARRAY/////////////////////////////////////////////
for(;i < n;i++)
{
sum += S[i].GPA;
meanGPA = sum/n;

meanAge += 2013 - S[i].dob.year;
meanAge = meanAge/n;

}


cout << meanGPA << ' ' << meanAGE;
}
[/code]

[pogrady]

struct and class definitions must occur outside of function definitions:

#include <iomanip>
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <stdlib.h>
#include <ctime>
using namespace std;

////////////////////////CREATE TWO STRUCTURES/////////////////////////////////
struct Date
{ int month;
int day;
int year;
} ;
struct Student
{ string name;
Date dob;
double GPA;
}S[200];


int main()
{
int i = 0;
string line;
int meanGPA = 0;
int meanAge = 0;
int sum;

////////////////////////READ FROM THE FILE ////////////////////////////////////
ofstream rData;
rData.open ("student.txt", ios::out);

int n = 0;

while(rData >> S[n].name >> S[n].dob.day >>S[n].dob.month >> S[n].dob.year >> S[n].GPA) n++;


//////////////////////PROCESS ARRAY/////////////////////////////////////////////
for(;i < n;i++)
{
sum += S[i].GPA;
meanGPA = sum/n;

meanAge += 2013 - S[i].dob.year;
meanAge = meanAge/n;

}


cout << meanGPA << ' ' << meanAGE;
}

[fg109]

ofstream rData;
rData >> ...

The >> is an input operator. You can't use it on an ofstream.

[ktk0541]

Thank you for your quick response. That was a silly mistake, but it doesn't work in this case either

[fg109]

What is the new error then???

Also, you didn't initialize sum to 0, and the way you're calculating meanAge is totally wrong.