title: Installing c++ standard library files on ubuntu
body: <p>To give a background, there was a tuple file in /usr/include/c++ which got corrupted. So my compiler used to give input/output error. I downloaded tuple file from web from c++ library and replaced it with my corrupted file. But now error was different. My professor asked me to reinstall my library. So for that i removed /usr/include/c++ folder that had all library files. Now when i reinstalled g++ i thought it would automatically get the header files i.e /usr/include/c++ folder but i was wrong. It does not get installed. I have tried to find solution and people saying install -dev version etc but i could not find the commands to install those header files. Kindly help.</p>