segmentation-fault

问题 My code's aim is to take in 2 command line arguments (inclusive of programme name), and to print out responses as shown based on the given 2nd command line argument. If the command line argument is an integer, the user's input is accepted or "Success"and if it as anything else (e.g. a string or more than one command line argument), it will be Null and the error message will be shown. This is for CS50 caesar for those who are familiar My Code is as follows: #include <stdio.h> #include <cs50.h>

问题 I get a segmentation fault when I try to run the code below. I've tried commenting out bits of the code, and found that the while loop with the condition j < is_prime.size() is the culprit. This is puzzling to me because I perform the same check between the same values in the for loop above it, but do not get a segmentation fault. Could someone explain to me what's the issue here? I'm using GCC 4.8.2 on Linux 64. #include <bitset> #include <iostream> using namespace std; const size_t max

问题 I get a segmentation fault when I try to run the code below. I've tried commenting out bits of the code, and found that the while loop with the condition j < is_prime.size() is the culprit. This is puzzling to me because I perform the same check between the same values in the for loop above it, but do not get a segmentation fault. Could someone explain to me what's the issue here? I'm using GCC 4.8.2 on Linux 64. #include <bitset> #include <iostream> using namespace std; const size_t max

问题 My code is causing a segmentation fault somewhere. I'm not entirely sure how. I don't think it's an issue with load, as the program begins listing off Misspelled words before abruptly stopping and giving me the seg fault error. // Implements a dictionary's functionality #include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> #include "dictionary.h" #define HASHTABLE_SIZE 80000 unsigned int count = 0; // Represents a node in a hash table typedef

问题 Following is the implementation of infix to postfix conversion, it is working fine on my computer, but as I am submitting in on SPOJ it is giving me Runtime error SIGSEGV , I am new to competitive programming and I am unable to handle such type of errors. #include <iostream> #include <stack> #include<string.h> #include<ctype.h> using namespace std; int prec(char ch){ switch(ch){ case '^' : return 3; break; case '*': case '/': return 2; break; case '+': case '-': return 1; break; default:

问题 I am following the GLFW guide to getting started but I can't seem to make it run with GLAD. Here's my C file (prac.c) #include <stdio.h> #include <stdlib.h> #include<glad/glad.h> #include<GLFW/glfw3.h> void error_callback(int error, const char* description) { fprintf(stderr, "Error %d: %s\n", error, description); } int main(void) { GLFWwindow* window; if(!glfwInit()) return -1; glfwSetErrorCallback(error_callback); glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT

问题 I have a array consisting of chars like [1,2,3,4,5,.,..] and I have a loop that looks like for (size_t i = 0; i < size; ++i) os << data[i]; // os is std::ostream& This loop prints the array in the correct order without any errors. But when I use this loop to print it backwards for (size_t i = (size - 1); i >= 0; --i) os << data[i]; I get a segmentation fault error. Any reason why this can happen? 回答1: The condition i >= 0 is always true (because size_t is an unsigned type). You've written an

问题 This question already has answers here : Input with char pointer vs. char array (6 answers) Closed 5 years ago . I am trying to take in string from keyboard. When I tried this it didn't work. char *s; fgets(s,80, stdin); I get a segmentation fault when I am trying to use the above code. However when I use below code it works, and I don't get a segmentation fault. char s[81]; fgets(s, 80, stdin); Why do I segmentation fault when I try to store the string using pointer ( char *s )? 回答1: This is

问题 I use Apache 2.4.10 and Debian 8. I installed apache and most packages with apt. For long time all was good, but suddenly we started to receive seg fault. [Wed Jan 02 00:55:19.233027 2019] [mpm_prefork:notice] [pid 25161] AH00171: Graceful restart requested, doing restart apache2: ../../../src/util/support/threads.c:383: krb5int_key_delete: Assertion `destructors_set[keynum] == 1' failed. [Wed Jan 02 00:55:19.326118 2019] [core:notice] [pid 25161] AH00060: seg fault or similar nasty error

问题 This question already has answers here : Why do I get a segmentation fault when writing to a “char *s” initialized with a string literal, but not “char s[]”? (17 answers) Closed 7 years ago . #include <stdio.h> #include <conio.h> void test(char *p) { p = p + 1; *p = 'a'; } int main() { char *str = "Hello"; test(str); printf("%s", str); getch(); return 0; } When I run this code it gives segmentation error ? why is this happening. The const theory is not clear to me... whereas if I declare str