help please because it due by wed

[twohtallday]

{proj7.txt}
12 5 39
27 9
190 29 46
23
8 19 97 20


i need help Developing a C++ program to:
1.read a series of integer numbers from the file “proj7.txt”
2.calculate and display the total of these numbers
3.calculate and display the average of these numbers

what i have so far is number 1 but i need help completing 2-3

#include<iostream>
#include<fstream>
#include<ctime>
using namespace std;
int main()
{

int total;
const int text=81;
char input[text];
fstream dataFile;

dataFile.open("proj7.txt",ios::in );
if (!dataFile)
{
cout<<"Error"<<endl;
return 0;
}
dataFile.getline(input,text,'$');
while(!dataFile.eof())
{
cout<<input<<endl;
dataFile.getline(input,text,'$');
}
cout<<total<<endl;
dataFile.close();
return 0;
}

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