C : Get Size of Big File

I want to get size of file in C (this program can handling open big input file >4GB). I use function fseek and ftell to get size of file. But the problem when we use this command is fseek and ftell can not handling open big file input (>4GB). Because return value from command ftell

svd code in c

This is my new post about how to create svd code in c with LAPACK routines. I get a problem in programming about gridding and I want to use svd code in c (I create svd code with LAPACK routines and call that from C) to solve this problem computation. In linear algebra, the singular

Qt : Only One Program is Running

In many cases you may want to ensure that only one program or instance is running. In another word, if an instance of program is running and the user tries to run a new instance, you want to found that and exit second program and maybe show an appropriate message. You can implementated Qt  only