Thread: simple program help

SUP!, well i need help, im using visual C++, and i need to write a simple program that reads 100 numbers from 1 to 100 on a txt file, calculates their average, and the standard deviation and then inputs the standard deviation and average into the original file at the bottom:? .....k i know you start off with the basic library's you'll be using and the basic setup and such,, but from there on i am completely lost8O ,........be great if someone could help me writing this out so i can understand what i should be doing..shouldn't take long since i was peeping the forum and people seem C++ savy here...

btw the file im using is called data.txt...and is in the "Temp" folder of my c drive...THIS is attempt so far ....keep in mind im mad beginner ...in essence i need help in the whole std deviation part.

THANKS!

btw this is my code so far, be great if someone could tell me if im ok so far, aslo how i could do the standard deviation, i cant find a way to do it..

Code:

#include <iostream>
#include <cmath>
#include <fstream>
#include <iomanip>

using namespace std;

int main() 
{
    float sum = 0, StdDev = 0;
    int x = 0;
    ifstream inFile;
    inFile.open("data.txt");

    while ( inFile >> x )
	{
		sum += x;
	}	
    inFile.close();

	ofstream outFile( "data.txt", ios::app );
	outFile.seekp( ios::end );
	outFile << sum << endl;
	outFile.close();	
    return 0;
}