Reading a file into vectors

[alee4408]

My program writes a vector to a file in binary. I want to erase the vector, then read the file to repopulate the vector then display.

Basically I want to erase the RAM memory and be able to use the file as memory. This is my current code but it is not reading the file correctly. I have checked the file to see that the writing part is working.

Any ideas?

void read_from_file(vector<Info> &vector)
{
     
     fstream file;
     
     file.open("info.dat", ios::binary | ios::in);
     
                if (file.fail())
                {
                       cout<<"\n FILE DOES NOT EXIST \n";
                       system("pause");
                }
                
                if(file.good())
                {
     
                       for (int count = 0;count < vector.size(); count++)
                       {
                             file.read(reinterpret_cast<char*>(&vector[count]),sizeof(vector[count])); 
                       }
           
                       for (int count = 0; count < vector.size(); count++)
                       {
                            cout << endl << (count) << ". NAME: " << vector[count].name << endl;
                            cout << (count) << ". AGE: " << vector[count].age << endl;
                       }
     
                }
     
     cout<<"\nINFORMATION READ FROM THE FILE\n";
     
     file.close();
}

[LB]

Can you show us the definition of Info? Only POD structures can be serialized this way.

[alee4408]

I would post the entire program but its huge. This is the structure with Info.

    const int name_size = 20;

    struct Info{

                    char name[name_size];
                    int age; 

               };

In the main function I declare the vector

int main()
{

    vector<Info> vector, vector1;

......