Code that will accept input from file at time of a.out?

[rego]

Hi:

I am writing code that will compute the median of a set of numbers (or grades) . I would like to know how I can make this program due two special things.

First, I would like for the code to accept a given amount of numbers defined by the amount the user would like to input.

Then I would like for this code to accept these numbers from a database that is entered like this.

>a.out <grades.cpp

I don't think that its possible to do the first part if I plan to use the second part. This is okay because I would rather use the second part.

Thanks in advance for any ideas you might have
rego

 

[jstreich]

&quot; First, I would like for the code to accept a given amount of numbers defined by the amount the user would like to input.
&quot;
Sorta like this?
int main(char *filename = NULL)
{
if(filename)
{
ifstream fin;
fin.open(filename);
vector<float> grades;
while( !fin.eof() )
{
float temp;
fin >> temp;
grades.pushback(temp);
}
}
else
{
cout<< &quot;Insert grades, seprated by spaces. Press Enter to stop.&quot;;
int count = 0;
vector<float> grades;
float grade;
while(cin >> grade)
{
grades.push_back(grade);
}
get();
}
//Do your math.
return 0;
}