Networking :: Disabled Printing Statement In The Middle Of CPP Program Execution?

In my program(C++), I have a ping function call which will ping the specified IP and returns the result. The problem is, my code does not print the o/p to the terminal window after calling the ping fucntion for the first time. but, the cout statements exist before the ping function call, works fine. When i debug it using strace i found that output filedescriptor is getting closed some where through close(1), before returning from ping call. What would be the issue, can u please some one explains me what the problem is.