TLDR: I need to check if the input I am scanning with scanf into an array is really an integer while using EOF. I need to scan numbers into an array until EOF. I am doing everything with statically allocated memory, since I am quite a beginner and for now dynamically allocated memory is hard… Read More Multiple conditions with scanf in C
Let’s say that I have a code like: python <<EOF print("abc") EOF and I want to assign output to bash variable. Something like: VAR=$(python -c ‘print("abc")’) Of course real python code is more complicated than print(abc) and one-liner can’t be used here So the qestion is how to assign output of first example to variable?… Read More How to use multiline <<EOF in bash with assigning output to variable?
this is my first question on StackOverflow ! 🙂 To be honest I’m about to destroy my whole setup. My code is making me crazy. My problem is, I am not able to fill a dynamic array with the return of a function. My goal here is, for each array box, fill it with a… Read More Attribute return of a function to an array
I’m making a program to add items to a LIFO (last in first out) array, where the elements are inserted at the start of the array. Here is my code: typedef struct neud{ int num; struct neud *next; }neud; void add(neud** head,int val){ //creat a new neod neud* newNeod; newNeod = malloc(sizeof(neud)); //assigning newNeod->num =… Read More I'm having a problem understanding double pointers
I’m making a program to add items to a LIFO (last in first out) array, where the elements are inserted at the start of the array. Here is my code: typedef struct neud{ int num; struct neud *next; }neud; void add(neud** head,int val){ //creat a new neod neud* newNeod; newNeod = malloc(sizeof(neud)); //assigning newNeod->num =… Read More I'm having a problem understanding double pointers
I need to use the lock construction, and edit the following methods to execute in parallel: public void Withdraw(int amountToWithdraw) { if (amountToWithdraw <= 0) { throw new ArgumentException("The amount should be greater than 0."); } if (amountToWithdraw > MaxAmountPerTransaction) { throw new ArgumentException($"The value {amountToWithdraw} exceeds transaction limit: {MaxAmountPerTransaction}."); } if (amountToWithdraw > Amount)… Read More Using lock statement in c#
I want to output a boolean as true indicating both maps have same Key and values. If i use equals() it returns false. How can i output as true , Object references are different. But the entries are same I have 2 maps below Map<String,Information> map1=new HashMap<>(); map1.put("key1", new Information("10","20","30","40")); map1.put("key2", new Information("11","22","33","44")); Map<String,Information> map2=new… Read More Comparing 2 HashMap with Key as String and Value as UserDefined Object
I think the two commands below should be identical, but given the heredoc, the shell produces an error. Is it possible to pass a heredoc to the -c argument of sh? heredoc example /bin/sh -c <<EOF echo ‘hello’ EOF # ERROR: /bin/sh: -c: option requires an argument simple string example /bin/sh -c "echo ‘hello’" #… Read More sh -c doesn't recognize heredoc syntax
I would like to store all bits of a double in a 64-bit integer in C. I.e. the most significant bit should be the sign, after that the exponent, then the fraction. I would like to use a union. >Solution : The safest way to do this is to use memcpy. double x = 123.456;… Read More How to turn a double to a 64-bit integer bit by bit using unions
I’ve been trying to figure out how to do one of the tasks that im given for the past 3 hours and I just can’t seem to do it. This is the task: Add a login page (login.html) with a login form to the system. When logging in, it creates a cookie in which the… Read More JavaScript login with cookies