Try a basic textbook...u seem to be an Indian so i would advice yashwant kanetkar's Let Us C.Though it isn't the best book but still a very good starting point u can move to advance ones when u feel a bit confident
END AND START TAGS IN THE PROGRAMMING ARE THE SAME for all in c programming, WILL BE DIFFERENT IN C++ AND C# TOO, learn the logic,..refer reference books and also simple example first, try your own programming, with more errors, you will understand what to eliminate and and what to add, requires more practice and need to run every programe your self to check errors