Input/output file with arrays

[Kirito]

Hi, I'm not understanding where I went wrong here. It compiles fine, but then my file doesn't have the array numbers and gives a stack overflow warning. Can anyone tell me where I went wrong?

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


const int NUM_ARRAY = 20;
void file(double[]);
void secondFile(double[]);

int main()
{
double numArray[NUM_ARRAY] = { 88, 85, 89, 64, 78, 85, 92, 60, 91, 96, 63, 59, 83, 89, 74, 93, 92, 92, 63, 100 };
double secondArray[NUM_ARRAY];

file(numArray);

secondFile(secondArray);

system("pause");
return 0;
}
void file(double numArray[])
{
ofstream myFirstFile;
int x = 0;

myFirstFile.open("final.txt");

if (!myFirstFile)
cout << "Error opening the file." << endl;
else
{
cout << "Writing to a file." << endl;

for (x; x < NUM_ARRAY; x++);
{
myFirstFile << numArray[x];
}

myFirstFile.close();
}

system("Pause");
}
void secondFile(double secondArray[])
{
ifstream myFirstFile;
int x;
myFirstFile.open("final.txt");

if (!myFirstFile)
cout << "Error opening the file." << endl;
else
{
cout << "Writing from a file." << endl;

for (x = 0; x < NUM_ARRAY; x++);
{
myFirstFile >> secondArray[x];
}

myFirstFile.close();
}

system("Pause");
}

[ne555]

> and gives a stack overflow warning
¿? stack overflow is a fatal error.
I did not observe such behaviour, and don't see anything in the code that may cause it.

However

$ g++ -W{all,extra,pedantic} foo.cpp
foo.cpp: In function ‘void file(double*)’:
foo.cpp:36:9: warning: statement has no effect [-Wunused-value]
		for (x; x < NUM_ARRAY; x++);

¿see the semicolon at the end? that was your loop executes
(you would have no issue if you had limited the scope of the variable)