Can't get Boolean operators to work correctly?

[C Minus Minus]

Hey guys, this is an extension of a problem I was working last night (and a big thanks to those that helped me). I am writing a program that will open a file and read the first 12 integers in the file, add them, and output the average. Here is my code:

#include <fstream>
#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;


int main ()

{
ifstream InFile;
ofstream OutFile;
int count = 0;
float sum = 0;
float num=0;
float solution=0;


InFile.open("E:\\CFiles\\DataFile2.txt");

if (InFile)
InFile>>num;

while (InFile)
{
sum=sum+num;
count++;
InFile>>num;
}

if (count=12)
{
solution=sum/count;
cout<<setprecision(5)<<"The average of the first 12 numbers in the file is "
<<solution<<endl;
}


InFile.close();
}


When I run this program it compiles correctly, BUT my question is that when I replace if(count=12) with if (count<=12) or if (count==12) the program does NOT compile correctly. I really feel like it should be a Boolean operator there, but I cannot get to compile correctly. Can anyone offer me any insight?

[IceThatJaw]

What is the error? It must be something specific to the compiler because it compiles fine using GCC command line.

[ResidentBiscuit]

if (count=12)

This shouldn't be the cause of your compilation issues, but this isn't doing what you're wanting (probably). I think you want the == operator (comparison), instead of the = operator (assignment)

[C Minus Minus]

I'm sorry, I should have been more clear. There is no error; it does compile, but there is no output to the screen. My output just says "Press any key to continue". Now when I use the "=" in place of "==" or "<=" the program does output the cout statement and solution to the screen.

I am using Visual Studio 2010 C+.

[blueberry]

if (count==12)

You initialized count to 0, so incrementing it 12 time would make count == 11.
:)

[C Minus Minus]

blueberry, I thought for sure that would resolve it...but when I run the program I'm still not getting output.

[blueberry]

OH. I think I see it.

int main ()

{
ifstream InFile;
ofstream OutFile;
int count = 0;
float sum = 0;
float num=0;
float solution=0;


InFile.open("E:\\CFiles\\DataFile2.txt");


while (InFile)
{
InFile>>num;/*here is your problem, it causes the file to not be set as not good after the 12th time 
you get a number, therefore causing the counter not to incremented after it and the number not to be 
added*/
sum=sum+num;
count++;
}

if (count=12)
{
solution=sum/count;
cout<<setprecision(5)<<"The average of the first 12 numbers in the file is "
<<solution<<endl;
}


InFile.close();
}

This should do it.