When you print the addresses of a and b, that forces the variables to actually have a memory address. Otherwise a value might be stored in a register, or not at all if never used. It is a very common optimization for compilers to transform const int a = 9; cout << a; into cout … Read more
Why not the getpid() method defined in unistd.h? #include <unistd.h> int main(){ int pid = getpid(); int parentsPID = getppid(); return 0; } 1 solved How to find the PID of a C code during compilation time? [closed]
What is head declared as outside the function? Does any code outside the function modify head? If head is null going into the function then your function won’t do anything, and depending on the print code you also didn’t present, it might just loop forever for just that reason alone. In your first if statement … Read more
No, function members cannot be declared in C structs (only in C++). The convention is to pass the struct pointer as the first argument in the functions when doing object oriented programming. Also, C++ really does the same thing, the “this” pointer is passed as the first argument, it is just hidden. struct stack{ int[10] … Read more
When you call CreateStack, the pointer is passed by value. The pointer that is returned by the call to malloc in your function is never assigned to the STACKHEAD. Try writing a CreateStack function that returns a pointer to the stack that gets created. It should not take any arguments. 1 solved Data Structre of … Read more
It would help to see how you push items onto the stack. If you’re really calling pop without a push first, well, then it’s not supposed to do anything, is it? This bit makes me nervous: Node *aux,*prev; prev = *stack; aux = prev->next; if(aux == NULL) { free(prev); return; } You set prev to … Read more
It’s because you are using sc.nextInt() to get input from the user and it doesn’t consume the line so when you use switcher = sc.nextLine(); it still reads the number that the user entered before. You can add this after catcher = sc.nextInt(); to consume the line: if (sc.hasNextLine()){ sc.nextLine(); } Or alternatively you could … Read more
Using stack.top() is illegal if the stack is empty. Change while((!highPrecedence(stack.top(),c)) && (stack.size()!=0)){ to while((!stack.empty()) && (!highPrecedence(stack.top(),c))){ The initiali value of i is not good and you are printing uninitialized variable, which has indeterminate value. Change int i=0; to int i=-1; 1 solved Postfix notation stack C++ [closed]
Why does the difference emerge between this two codes in C: Array Implementation for Stack and Linked List Implementation for Stack? solved Why does the difference emerge between this two codes in C: Array Implementation for Stack and Linked List Implementation for Stack?
Your question misses important details and actually I shouldnt be writing this answer, but as you actually also didnt ask a question, I just do it. This error message: error: no matching function for call to ‘AlgoStack<State<std::pair<int, int>* >>::push(State<std::pair<int, int> >*&)’ tells us that there is an instantiation of AlgoStack with the template parameter being … Read more
just an example, you could pass your stack variable as an argument to the GetSum() function. private static int GetSum() { Stack<int> stack = new Stack<int>(); stack.Push(2); stack.Push(5); stack.Push(7); stack.Push(4); stack.Push(1); int sum = 0; foreach (int number in stack) { if (number % 2 != 0) { sum += number; } } return sum; … Read more
The member function that you have defined (node(…)) is a constructor and lets the compiler know what to do when you create an object on type node. For example, in your code, you use this statement in your push function: t = new node(a, t);. Compiler has to know how to create a new node … Read more
Functions return their value in $v0; the print integer syscall expects its argument in $a0. You need to move $a0 to $v0 before you do the print, otherwise you’ll be printing whatever happened to be in $a0 (which in the case is the last value that you recursively added; i.e. 10). solved the answer is … Read more
pop() is not working because you are using different objects for push and pop. You don’t need to define another class for push and pop, they are operation add those function inside Stack class. class Stack { … // members and constructor public void push(){..} public void pop(){..} public void show(){..} } And create an … Read more
Deque: This would be a decent choice, since you can add/remove from both the front/end of the line in O(1) time, and the number of patients can be kept track of with an integer variable, so getting the size of the line would be O(1). You can also ensure a max capacity of N by … Read more