help with in/ou files

[tiareharo]

Write your question here.
I am stuck with this program
this is the problem:
Write a program that will ask user to enter in the temperature in Celsius and write the data to a file. Program will give user option to 1) add more data 2) create a report which will show temps in Celsius and Fahrenheit. Report will also show the Average Temp in both C and F and the Standard Deviation again in both C and F.

this is what I have so far and I do not even know how to fix it.
thank you in advance ...

 #include <iostream>
 #include <fstream>       // Needed to use files
 #include <iomanip>
 #include <string>
 #include <cmath>


 using namespace std;

int main(void) 
{  		
        int   arraysize=365,
              choice,
 		       number_temp=0;
 		double temp[arraysize],
 		  		  average=0,
				  celsius,
				  fahrenheit = 0 ,
				  sum = 0 ,
				  standard_deviation = 0 ;
               
		
		
		ifstream in_temps;
		ofstream out_temps;

	do
	{
	//menue
		
		cout << "\t 1 Enter temperatures " << endl ;
		cout << "\t 2 Enter Create report " << endl ;
		cout << "\t 3 Enter to quit " << endl ; 
		cout << "\t Enter Option: " ;
		cin >> choice ;
		
		system (" cls ") ;
			switch(choice)
		{	case 1:
			
		{
		
		out_temps.open("d:temp_data.txt",ios::app) ;
			    
    	
       }
       
       out_temps.close() ; 
       break ;
       
       case 2 : 
	   {in_temps.open("d:Temperature.txt");//reading data
      			if(in_temps) //checks valid file
       			 {      
            		 while( in_temps >> temp[arraysize]) // will read while not EOF is read
             		 { 
                 	   celsius+=temp[arraysize];
                  	   arraysize++;
             		 }
       			  }
       		 	else
       				cout<<"error reading";
       }
	   
	   in_temps.close();
	   break ;
	}
				
		
	 

      
    }while(choice !=3);
    
return 0 ;
}
  Put the code you need help with here.

[jofelgrepo]

Hey we have the same program form my ENG 120C class, have you figured this one out? Im basically stuck with that code too