Input/Output files

[jwdcfdeveloper]

Ok, here's my situation. I need to read floating point values from a file, use a sort algorithm to put the values in numerical order, and then print the values out to the same file of the original values. I need three functions:

1. A function to read the values from the file
2. A function to write the reshuffled values to the file
3. A function to put the values into numeric order (main)


I know the basic code needed to do this, but I am having problems setting up the functions so that I can call the read/write functions in the main function. Anyone have any ideas about how this is set up?

 

[Totte]

It's not advance but a bubble sort works quite well depending on the number of posts to sort. The bubble sort is like this:

float Tabel[1000], Swap;
int Counter;
BOOL Not_Finished;
do
{
Not_Finished = true;
for(Counter = 0;Counter < Number_Of_Entrys - 1;Counter++)
{
if(Tabel[Counter] > Tabel[Counter + 1])
{
Swap = Tabel[Counter];
Tabel[Counter] = Tabel[Counter + 1];
Tabel[Counter + 1] = Swap;
Not_Finished = false;
}
}
}
while(Not_Finished);

To read and write the floats there is a quite recent thread about that.

Totte

 

[jwdcfdeveloper]

Do you remember the name of the thread?

 

[Totte]

&quot;Double to String&quot;

Totte

 

[calculus87]

hey,

to go to string:

double answer1,n1,n2;
string t1;
stringstream stream;
answer1=n2-n1;
stream << answer1; // this changes it from double to string; shove it into the stream
t1 = stream.str(); // inserts a string of t1
//*************************************
to go back to double
n1=atof(t1.c_str());

FYI: Make sure that &quot;n1&quot; in my case is a double. If it is a float it will not take the decimals.

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