stack

问题 For starters this is apart of my current homework assignment for my Data Structures class. I am not asking for answers, I am asking for help. I have a stack class that is implementing a Linked List instead of an array. I am currently trying to write my pop() function. I have a node for my theBack part of the stack. I am just confused as to getting to the predecesor of my theBack node. Any help with this would be awesome! Thanks! 回答1: A stack is actually reasonably simple to implement as a

问题 by now I just finish the expression turning to postfix expression, and I try to evaluate but something goes wrong and confusing me long time, and I just know how to fix it. This is my code turn to postfix expression: #include <stdio.h> #include <ctype.h> #include <stdlib.h> #define STACK_INIT_SIZE 20 #define STACKINCREMENT 10 #define MAXBUFFER 10 #define OK 1 #define ERROR 0 typedef char ElemType; typedef int Status; typedef struct { ElemType *base; ElemType *top; int stackSize; }sqStack;

问题 I have studied that during a fork, the data and code segment of the parent process gets duplicated into the child process. Kindly see the program below. int main() { int a = 5; pid_t pid; pid = fork(); if(pid == 0) { printf("In child a = %d",a); } else { printf("In parent a = %d",a); } return 0; } Here a is in the stack segment of parent process as it is declared inside the function, main() . The child process should only get copy of the code and data segment of the parent process and not the

问题 I am getting the following error when trying to build a binary expression tree from a Stack. I believe the issue is where I am popping in the recursive function, I think I am popping on an empty stack but I don't know the solution. * glibc detected ./interp: double free or corruption (fasttop): 0x0934d018 ** Here is my code: //This is the main int main(int argc, char *argv[]){ TreeNode *node; StackNode *stack = NULL; push(&stack, "a"); push(&stack, "b"); push(&stack, "+"); //while (emptyStack

问题 I'm trying to figure out what is stored at a certain place on the stack with GDB. I have a statement: cmpl $0x176,-0x10(%ebp) In this function I'm comparing 0x176 to the -0x10(%ebp) and I am wondering if there is a way to see what is stored at -0x10(%ebp). 回答1: I am wondering if there is a way to see what is stored at -0x10(%ebp). Assuming you have compiled with debug info, info locals will tell you about all the local variables in current frame. After that, print (char*)&a_local - (char*)

问题 Can you please tell me what I did wrong? I'm getting SIGSEGV (Segmentation fault) error. Is single linked list the best way to implement a stack abstract data type? I'm trying not to use global variables so that's why I used double pointers. #include <stdio.h> #include <stdlib.h> typedef struct stack{ int data; struct stack *next; }STACK; void push(STACK **head,STACK **tail,int n) { STACK *x; if(*head==NULL) { (*head)=malloc(sizeof(STACK)); (*head)->data=n; (*head)->next=NULL; *tail=*head; }

问题 This question already has answers here : Closed 9 years ago . Possible Duplicate: What and where are the stack and heap Where is heap memory and stack memory stored?I mean where on the harddisk?what are the limits of their size? 回答1: You should consider memory and hard-disk as opposites. Memory is the more expensive stuff that comes in sticks and is 1000x faster than hard disk. I don't think you'll be able to "find" the heap and stack memory the way you want to. The OS sets this up by

问题 Flutter: I have two images within a stack, each capable of being scaled by dragging it. The two images are positioned one below the other, so they're both fully visible on screen at first. When I drag the top or bottom image, either should become bigger and overlap the other picture. Therefor, the order in my stack has to change depending on which image I panDowned. I made it almost work, but there is problem I just don't understand. Initially, my top image is the "master" image. So, I can

问题 I started out with Java, so I am a bit confused on what's going on with the stack/heap on the following line: string *x = new string("Hello"); where x is a local variable. In C++, does ANYTHING happen on the stack at all in regards to that statement? I know from reading it says that the object is on the heap, but what about x ? In Java, x would be on the stack just holding the memory address that points to the object, but I haven't found a clear source that says what's happening in C++. 回答1:

问题 I know the title is a bit ambitious, but I am wondering if there is a way, after displaying a previous state in the call stack window (Visual Studio 2010) when debugging a C# program, to restart (like when hitting "Continue"/F5) from there. This would be particularly useful to debug a lambda expression that generates an exception, as there is no way to move outside. For a real OO code time machine, the historical state of all objects would need to be stored in memory, so I doubt it is