# help needed with simple code

• 08-17-2005
Branka
help needed with simple code
Hi my code is working except the final part where I test whether the sum of probabilities is equal 1 or not. I am new in this field and I guess that is the reasson I just cannot find any mistake. Th euser needs to enter 3 numbers which sum is one. And if they enetr it wrongly, teh program should let them know.

I would really appreciate any help!!!!!
#include <iostream.h>
#include <fstream.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>

Code:

```main () { ofstream os; ifstream is; os.open("d:\\Branka\\lit review\\programming\\Prep\\intro.txt");   if(os.fail())   {           cout << " Output file opening failed. \n";           exit(1);   }  os.setf(ios::fixed);  os.setf(ios::showpoint);  os.precision(3);  int a; float num; float sum=0; float small=1e-2;  cout <<"\nPlease enter the probability values for RIF1 or Training for recovery within the team/ATC Centre.";  cout <<"\nThere are three possible Levels of influence of this paricular RIF.";  cout <<"\nYou need to enter corresponding probabilities for each Level so that the sum equals one (e.g. 0.33, 0.33, 0.33).";  cout <<"\nIf one Level corresponds precisely to the event under description, simply enter zero to the other boxes (e.g. 0, 1, 0 or 0.5, 0, 0.5).";  cout <<"\nPlease enter three values separarted with the space: ";   for (a=0; a<3; a++)                           {       cin >> num;       os <<"The RIF Level "; os  << (a+1); os << " is: "; os << num; os << endl;       sum +=num;         }         if ((sum>=1.00-small)&&(sum<=1.00+small))       {cout << "The input is verified, move on to the next RIF!\n";}   else        {cout << " The sum of your inputs is not 1, but"; cout << sum;         cout << "! Input the probabilities so that their sum equals 1.\n";}         os << "The sum of your inputs is "; os << sum; os << endl; return 0;  }```
• 08-17-2005
Fordy