How to fix runtime error: load of null pointer of type 'const char?

I need to write function which loads dictionary in hash table.I'm confused about error message: c:37:20 runtime erro...

My C program reads a text file. When I put it into Xcode it fails. What's happening??

I have a function that opens a .txt, uses fscanf to read numbers formatted like: 532 2 -234 32 etc. It successful...

meaning of (number) & (-number)?

What is the meaning of (number) & (-number)? I have searched it but was unable to find the meaning I want to u...

C - Read file and count rows and columns?

I am trying to make a function to read a file It should count the rows and columns Set the global variables to be t...

What do numbers using 0x notation mean??

What does a 0x prefix on a number mean? const int shared_segment_size = 0x6400; It's from a C program. I can't re...

What does it mean to return a value from a C program??

I'm very new to programming and confused about returning a value in the C language. int main() { printf("hallo ...

What is the fastest way to swap values in C??

I want to swap two integers, and I want to know which of these two implementations will be faster: The obvious way w...

Why are unused variables bad??

I would like to know why an unused variable is bad. Is it because the compiler would create a bigger binary? If yes...

What's the C library function to generate random string??

Is there a library function that creates a random string in the same way that mkstemp() creates a unique file name? ...

Is * equivalent to [] in C??

Would coding: char *argv[] would be the same as: char **argv Or would: char *string1; int *int_array; be e...

extern and global in c?

Can anyone please tell me is there any special requirement to use either EXTERN or GLOBAL variables in a C program? ...

Difference between “while” loop and “do while” loop?

What is the difference between while loop and do while loop. I used to think both are completely same.Then I came ac...

What does (int*) &var mean??

What is the meaning of (int*) &i? char i; int* p = (int*) &i; ... *p = 1234567892; ... If it wa...

Appending to CMAKE_C_FLAGS?

I'm using CMake for a project that comes in two versions, one of which requires -lglapi and the other does not. So...