Sponsored Content
Full Discussion: Segmentation fault
Top Forums Programming Segmentation fault Post 302858333 by sizzler786 on Monday 30th of September 2013 06:39:49 AM
Old 09-30-2013
Segmentation fault

I keep getting this fault on a lot of the codes I write, I'm not exactly sure why so I'd really appreciate it if someone could explain the idea to me.

For example this code

Code:
#include <stdio.h>
main()
{
   unsigned long a=0;
   unsigned long b=0;
   int z;
    {
    printf("Enter two digits you want to add seperated by a space:");
    scanf("%u %u", a, b);
   }



z= a + b;
printf("\n%u\n", z);


}

Its because I forgot the &'s! Okay I got it nevermind Smilie

---------- Post updated at 11:39 AM ---------- Previous update was at 10:33 AM ----------

Code:
#include <stdio.h>

main()
{
   unsigned long c=0;
   unsigned long a=0;
   unsigned long b=0;
   unsigned long z;
   unsigned long noBits = 32;
   unsigned long x = (1 << noBits - 1);
   unsigned long y = 129;
   int i;
   unsigned long k;
   unsigned long t;
   unsigned long g;
   {
    printf("Please choose a function\n Calc (1)\n Binary convertor (2)\n");
    scanf("%u", &c);
     {
    if (c == 1)
       {
        {printf("\n 1 for addition\n 2 for subtraction\n 3 for multiplication\n 4 for division\n");
        scanf("%u", &g);

          printf("\nEnter two digits seperated by a space:");
           scanf("%u %u", &a, &b);


       if (g==1)
            {z= a + b;
printf("\n%u\n", z);}
       if (g==2)
            {z=a - b;
printf("\n%u\n", z);}
       if (g==3)
            {(z= a * b);
printf("\n%u\n", z);}
       if (g==4)
            {(z= a / b);
printf("\n%u\n", z);}

                printf("\n%u\n", z);
        }
       }
       
    if (c == 2)
       {printf("Enter any whole number:");
        scanf("%d", &y);
        for (i=noBits - 1; i >= 0; i--)
  {
    printf("i = %d  ", i);
    x = 1 << i;
    k = x & y;
    if (k != 0){
      printf("binary = 1\n");
    } else {
      printf("binary = 0\n");
    }
                
  }
     }


   }
}
}


why doesnt the calculator work!

Last edited by sizzler786; 09-30-2013 at 06:38 AM.. Reason: solved
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Segmentation Fault

hello all, I tried a program on an array to intialise array elements from the standard input device.it is an integer array of 5 elements.but after entering the 4th element it throws a message called "Segmentation Fault" and returns to the command prompt without asking for the 5th element. ... (3 Replies)
Discussion started by: compbug
3 Replies

2. Programming

Hi! segmentation fault

I have written a program which takes a directory as command line arguments and displays all the dir and files in it. I don't know why I have a problem with the /etc directory.It displays all the directories and files untill it reaches a sub directory called peers which is in /etc/ppp/peers.the... (4 Replies)
Discussion started by: vijlak
4 Replies

3. Programming

segmentation fault

ive written my code in C for implementation of a simple lexical analyser using singly linked list hence am making use of dynamic allocation,but when run in linux it gives a segmentation fault is it cause of the malloc function that ive made use of????any suggestions as to what i could do??? thank... (8 Replies)
Discussion started by: rockgal
8 Replies

4. AIX

Segmentation fault

Hi , During execution a backup binary i get following error "Program error 11 (Segmentation fault), saving core file in '/usr/datatools" Riyaz (2 Replies)
Discussion started by: rshaikh
2 Replies

5. Programming

Why not a segmentation fault??

Hi, Why I don't receive a segmentation fault in the following sample. int main(void) { char buff; sprintf(buff,"Hello world"); printf("%s\n",buff); } If I define a buffer of 10 elements and I'm trying to put inside it twelve elements, Should I receive a sigsev... (22 Replies)
Discussion started by: lagigliaivan
22 Replies

6. UNIX for Dummies Questions & Answers

Segmentation Fault

Hi, While comparing primary key data of two tables thr bteq script I am getting this Error. This script is a shell script. *** Error: The following error was encountered on the output file. Script.sh: 3043492 Segmentation fault(coredump) Please let me know how to get through it. ... (5 Replies)
Discussion started by: monika
5 Replies

7. Programming

segmentation fault

Hi, I am having this segmentation fault not in the following program, bt. in my lab program . My lab program is horrible long so cannot post it here bt. I am using the following logic in my program which is giving the segmentation fault. Bt. if I run this sample program as it is it dosen't give... (3 Replies)
Discussion started by: mind@work
3 Replies

8. Programming

Using gdb, ignore beginning segmentation fault until reproduce environment segmentation fault

I use a binary name (ie polo) it gets some parameter , so for debugging normally i do this : i wrote script for watchdog my app (polo) and check every second if it's not running then start it , the problem is , if my app , remain in state of segmentation fault for a while (ie 15 ... (6 Replies)
Discussion started by: pooyair
6 Replies

9. Homework & Coursework Questions

Segmentation Fault

this is a network programming code to run a rock paper scissors in a client and server. I completed it and it was working without any error. After I added the findWinner function to the server code it starts giving me segmentation fault. -the segmentation fault is fixed Current problem -Also... (3 Replies)
Discussion started by: femchi
3 Replies

10. Programming

C. To segmentation fault or not to segmentation fault, that is the question.

Oddities with gcc, 2.95.3 for the AMIGA and 4.2.1 for MY current OSX 10.14.1... I am creating a basic calculator for the AMIGA ADE *NIX emulator in C as it does not have one. Below are two very condensed snippets of which I have added the results inside the each code section. IMPORTANT!... (11 Replies)
Discussion started by: wisecracker
11 Replies
uac(1)							      General Commands Manual							    uac(1)

NAME
uac - Unaligned Access Message Control SYNOPSIS
uac p | s [value] uac p | s [keyword] OPTIONS
The following options are used with the uac command: Sets or displays the current option setting for the parent process Sets or displays the current option setting for the system The following keywords are used with the p option: Reset the current option settings to the default for the parent process Do not print the unaligned access warning message for the parent process Do not fix the unaligned access for the parent process Deliver a SIGBUS signal to the parent process The following keywords are used with the s option: Reset the current option settings to the default for the system Do not print the unaligned access warning message for the system Usually, the parent process is the shell. DESCRIPTION
Most complex instruction set computers (CISC) can access unaligned data but only at a significantly reduced speed. Most reduced instruc- tion set computers (RISC) do not attempt to handle unaligned accesses. Instead, they generate an unaligned access trap and let the operat- ing system handle the fault. The default action for the operating system when an unaligned access fault occurs is to fix the unaligned access fault and then display a warning message informing the user process that an unaligned access fault has occurred. The warning message has the following form: "Unaligned access pid=nnn <prog_name> va=virtual_addr pc=pc_addr". If you want to change the code to prevent the unaligned access faults from occurring in the future, the warning message gives you the information you need to locate the code causing a fault. (See the Program- mer's Guide for details on the causes and effects of misaligned data.) In addition, the default action for the operating system is to not deliver a SIGBUS signal to the parent process when an unaligned access fault occurs. These defaults are satisfactory for most users, but some users require a different behavior and want to specify their own Unaligned Access Control (UAC). The uac command enables or disables the display of "Unaligned access" messages. The command sets or displays the UAC_NOPRINT, UAC_NOFIX, and UAC_SIGBUS options, as defined in setsysinfo(2). If value is not specified, the current option setting is displayed. You can specify value as either 0 (zero) or 1 (one). If value is 0 (zero), the option is turned on and messages are not displayed. If value is 1 (one), the option is turned off and messages are displayed. Keywords can be used singly, or in any combination. However, the reset keyword overrides any other keywords it is used with. RESTRICTIONS
You must be superuser to set the system option. EXAMPLES
Both of the following commands disable messages for the parent process: # uac p 0 # uac p noprint Both of the following commands enable messages for the system: # uac s 1 # uac s reset The following command disables fixing of an unaligned access fault, disables printing a message for an unaligned access fault to the parent process, and enables delivery of a SIGBUS signal to the parent process: # uac p nofix noprint sigbus SEE ALSO
getsysinfo(2), setsysinfo(2) Programmer's Guide uac(1)
All times are GMT -4. The time now is 09:09 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy