Whats wrong with my file reading program?

It outputs the data correctly into the .txt file. But when reading it. It doesn't come out right.

Code:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

class Data
{
 public:
 void Output(char*, int);
 void Input(int);
 Data();
 ~Data();

 private:
 FILE *out;
 FILE *in;
 int *Age;
 int rand_age;

}dt;

Data:: Data()
{
 srand((int)time(NULL));
 out= fopen("Stats.txt", "w");
 in= fopen("Stats.txt", "r");
 Age= new int[2];
 rand_age=1 + (rand() % 15) + 10;
}

void Data::Output(char *Name, int ID)
{
 Age[ID]= rand_age;

 fprintf(out, "Name: %s\n", Name);
 fprintf(out, "Age: %i\n\n", Age[ID]);
}

void Data::Input(int ID)
{
 char *Name;
 fscanf(in, "Name: %s\n", Name);
 fscanf(in, "Age: %d\n", Age[ID]);

 printf("\nName: %s", Name);
 printf("\nAge: %d\n", Age[ID]);
}

Data::~Data()
{
 fclose(out);
 fclose(in);
 delete [] Age;
}

int main(int argc, char *argv[])
{
 if(sizeof(Data) > 0)
 {
  dt.Output("Jerome", 0);
  dt.Output("James", 1);
  dt.Input(0);
  dt.Input(1);
 }

 printf("\n\n");
 system("pause");
 return EXIT_SUCCESS;
}

You're opening the file two times, for reading and writing.

Do like this:

1.Open for write
2.write
3.Close
4.Open for read
5.read
6.Close