Question

I have a program that takes the counts of experiments as command string argument and outputs the sequence of floating numbers.
Example:
im_7.exe 10
10.41
13.33
8.806
14.95
15.55
13.88
10.13
12.22
9.09
10.45

So, i need to call this program in my program and analyze this sequence of numbers.

Answer 1

If your are on windows then you need to do the following

1. Create a Pipe1 using CreatePipe api of windows. Use this pipe for reading data from STDOUT of the child process.
2. Create a Pipe2 the same way and use that pipe for writing data to the STDIN of the child process.
3. Create the child process and in the startup info provide these handles and inherit the handles from the parent process. Also pass the cmd line arguments.
4. Close the write end of Pipe1 and read end of Pipe2.
5. In your case you are not writing anything into the child process input. You can straight away read the data from the child process output by reading from the Pipe1.

For a sample have a look at the following link. http://msdn.microsoft.com/en-us/library/ms682499%28VS.85%29.aspx

Hope this is what you are looking for.