This happens because declaring variables inside a for loop wasn’t valid C until C99(which is the standard of C published in 1999), you can either declare your counter outside the for as pointed out by others or use the -std=c99 flag to tell the compiler explicitly that you’re using this standard and it should interpret … Read more
As simple as that. Basically you don’t need it if the variable is int.
I have a big problem with my iOS App: it crashes sometimes without detailed debug error. The stack trace is empty. These are the only two lines in the stack trace: crash start in UIApplicationMain at “symbol stub for: -[_UIHostedTextServiceSession dismissTextServiceAnimated:]”. and report “libsystem_c.dylib`malloc_error_break”. in com.apple.main-thread. The error on Xcode debugger (with connected device): I … Read more
Got it finally: In my case, the problem resulted from a program called EGCS (Experimental/Enhanced GNU Compiler System). I installed it as a prerequisite for PSCAD(Power Systems CAD) along with a FORTRAN Compiler. Just remove it, and you’ll be fine.(Sadly, I deleted the entire PATH environmental variable due to a mistake. So what?…I ended up … Read more
C does not really have multi-dimensional arrays, but there are several ways to simulate them. The way to pass such arrays to a function depends on the way used to simulate the multiple dimensions: 1) Use an array of arrays. This can only be used if your array bounds are fully determined at compile time, … Read more
You actually compile the source code of test.c twice: The first time when compiling test.c itself, The second time when compiling main.c which includes all the test.c source. What you need in your main.c in order to use the test() function is a simple declaration, not its definition. This is achieved by including a test.h … Read more
You are incrementing ptr, therefore changing the address that it points to. You can’t do that. In your case, have a separate pointer, let’s say char * p = ptr and do your operations with p leaving ptr intact so you can free(ptr) later. EDIT Taking a second look at your code, I found that … Read more
I am taking a class on C, and I’m not very good at it , so I would like to ask you, how do I solve the problem: “Id returned 1 exit status”, I have been struggling with it for quite a while, so I would really appreciate your help. The full list of errors … Read more
UPDATE 2017: In C++17 there is now an official way to list files of your file system: std::filesystem. There is an excellent answer from Shreevardhan below with this source code (This code may throw): Old Answer: In small and simple tasks I do not use boost, I use dirent.h. It is available as a standard header in UNIX, and … Read more
With CMake, it’s generally recommended to do an “out of source” build. Create your CMakeLists.txt in the root of your project. Then from the root of your project: And for Debug (again from the root of your project): Release / Debug will add the appropriate flags for your compiler. There are also RelWithDebInfo and MinSizeRel build configurations. You can modify/add to the flags by specifying a toolchain file in … Read more