switch case: error: case label does not reduce to an integer constant?
int value; const int signalmin = some_function(); switch(value) { case signalmin: break; } I read the valu...
Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”??
Why is it that scanf() needs the l in "%lf" when reading a double, when printf() can use "%f" regardless of whether ...
Warning comparison between pointer and integer?
I am getting a warning when I iterate through the character pointer and check when the pointer reaches the null term...
RobotC - Programming an Elevator?
I'm designing and programming an elevator-like robot for a high school project. Could I possibly do anything to make...
Receiving warning “implicit declaration of function 'strlen'”?
I have a some simple code, but I am receiving a warning: -bash-3.2$ gcc -Wall print_process_environ.c -o p_p print...
Unknown ending signal when using debugger gdb?
I have installed GDB on Mac OS X and to test that it works I have used this following C program. #include <stdi...
error: ISO C forbids nested functions - What's wrong??
What's wrong with this merge sort usage? I'm trying to sort an array of size 9 as given in main(). However, I'm usin...
error C2371: 'functionname' redefinition: different basic types?
i have a Problem. I use Visual Studio 2013 and get the following Error: Error C2371: 'getgrundflaeche' redefinition...
Incompatible implicit declaration of built-in function ‘malloc’?
I'm getting this error: warning: incompatible implicit declaration of built-in function ‘malloc’ I am tryi...
Invalid type argument of -> C structs?
I am trying to access items in an array of structs and print the structs fields as follows printList(Album *a, int ...
Proper way to empty a C-String?
I've been working on a project in C that requires me to mess around with strings a lot. Normally, I do program in C...
What does ** do in C language? [duplicate]?
This quest...
error: expected declaration or statement at end of input in c?
void mi_start_curr_serv(void){ #if 0 //stmt #endif } I'm getting an error as "error: expected declaration or ...
function declaration isn't a prototype?
I have a library I created, mylib.c: #include <mylib.h> int testlib() { printf("Hello world\n"); ret...
