I'm currently reading "Expert C Programming - Deep C Secrets", and just came across this: The storage class specifier auto is never needed. It is mostly meaningful to a compiler-writer ...

When I use a pointer instead of referencing operator in a function pointer do not allow auto variable to get deleted after function call. I got Segmentation fault (core dumped) from this code because ...

I'm writing an API that has structs such as struct datast{ int a; int *items; size_t numitems; }; I'm providing functions which free the contents of such structs (in a similar fashion to what C++ ...

void func() { const int intAge = 24; } What happens with intAge after you run func()? Do you have to deallocate it, or does the C++ compiler do this?

In a C99 program, under the (theoretical) assumption that I'm not using variable-length arrays, and each of my automatic variables can only exist once at a time in the whole stack (by forbidding ...

Supose this C code: int main(){ int n; scanf("%d\n", &n); int a[n]; int i; for (i = 0; i<n; i++){ a[i] = 1; } } We have a vector which is in ...

I am currently on a demographic project. I have data from 3 different countries and their birth statistics in each month. My question: I want to calculate the percentage people born in each month and ...

Consider the following snippet: #include <array> int main() { using huge_type = std::array<char, 20*1024*1024>; huge_type t; } Obviously it would crash on most of platforms, because ...

Assume I have a structure like this in a C program: if (res == NULL) { int i = 1; ... } else { int i = 2; ... } Will I save some amount of memory if I instead write int i; if (res ==...

I have a folder with 5 files. One of the files has an email address. I want to extract the email address from the file first, map it to a database, and then store it somewhere as a variable so that it ...

I have a Debian server and I wish to "save" some files automatically and send them automatically to a googledrive. this automatic task must be done regularly (every week, for example)

Some of this may be a duplicate, but I am sorry for that. Let's say I have this struct: struct foo { int a; int b; int c; }; 1. If struct foo type object is declared in the way that it ...

I am looking for a VB script or batch file to read & Execute multiple URLs from an CSV file containing the URL Data in column B & The mentioned URL directly contains on the downloadable file ...

I'm currently studying variable length array and automatic storage. I have the following code that allocate memory for an variable length array myArray inside function vla, and return a pointer to ...

Consider the following code: void func() { int p; ... if (p > MAX) { struct my_struct s; ... /* here we access the contents 's' as '&s' */ } } In this snippet ...