How to print the output of the printf() on the command line interface?

[JAI BHAGWAN YADAV <saurav.yadav0005 () gmail com>]

Hello all,

I am a beginner,
My O.S. is 64 bit, Ubuntu 12.04 on virtual machine.

Q- I want to know about a specific function in wireshark source code so I
am trying by adding printf() in different files, having #include <stdio.h>.
But when I executes the command make and after that ./wireshark, wireshark
starts with one error on the command line interface, i.e., *nl80211 not
found*. And no output of the printf() is shown (*Wireshark is working*).
So, *please tell me how to print on the command line interface*. Or should
I start this only by ddd or gdb?

Thanks and regards

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