Raspberry PI GPIO programming in C

Programming Raspberry Pi 2 GPIO using C Language.
This tutorial will guide you to control gpio of raspberry pi using c programming language.
Step 1: Install Git core
sudo apt-get install git-core

Step 2: Download code from git branch,
git clone git://git.drogon.net/wiringPi

Step 3: build and install wiring pi library
cd wiringPi
./build

Step 4: Open your text editor, Nano in my case

Code link
http://www.myelectronicslab.com/tutorial/raspberry-pi-gpio-programming-c-wiring-pi-tutorial/

Step 4: Save , Exit, Compile and Run

Compile: gcc -o blink blink.c -lwiringPi
Run: sudo ./blink

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