Learning how arrays, strings, structures, and pointers actually work will explain almost everything that's baffling you right now.
I am very aware of that, which reminds me of my early posts in this forum. Learning by "practice" related to real problem is better, like this one and the strtok() function...... Am I stubborn and offending if I insist C++
As I have the same feeling like most of the beginners that sometimes C++ is easier to catch than C, and I am not able to mix C with C++ code together in one program at this moment. Neither do I want get lost when trying to solve one problem, so that I asked for C++.
OK, here is a modified version of the code, and I hope it is a improved version from "professional views"
Which is what I need.
Thank you so much again!
When run it, segment fault.
What is wrong?
#include <stdio.h>
#include <stdlib.h>
const int max =20;
//****************************************************
// Input Matrix
//****************************************************
void inMatrixAA(int *AA, int row, int col)... (9 Replies)
Dear all,
I used debugger from C++ and these are the message I got:
Program received signal SIGSEGV, Segmentation fault.
0x00323fc0 in free () from /lib/tls/libc.so.6
(gdb) info s
#0 0x00323fc0 in free () from /lib/tls/libc.so.6
#1 0x00794fa1 in operator delete () from... (5 Replies)
Hi
some help read............
I'm getting a segmentation fault when I run an AIX COBOL/Db2 program.
I initiate the program from the command line, but it hangs, and then when I press enter it generates a segmantation fault and produces a core dump.
The box is running AIX software level ... (5 Replies)
Hi all
In the ltp-posix test,there is a case in open_posix_testsuite\conformance\interfaces\timer_gettime\speculative/6-1.c
I run the above code,it will has a segment fault, if I modify it to below,it works well
Anybody can tell me why? (1 Reply)
I´m writing this program in QNX , I`m kinda new to UNIX and programing in general, and when I try to run it it gives me the Memory Fault error. Can anyone help?
#include <stdio.h>
#include <fcntl.h>
void main(void)
{int a,ter;
char buf;
printf("a=");
scanf("%d",a);
ter=open... (6 Replies)
Hi,
Whether the following piece of code is placed in the read-only memory of code (text) segment or data segment?
char *a = "Hello";
I am getting two different answers while searching in google :( that's why the confusion is (7 Replies)
I always get segment fault, why? can sb help me and modify it, I have spend on much time on
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <string.h>
#define MAX 10
pthread_t thread;
void *thread1()
{
int *a;
int i, n;
... (1 Reply)
Hello everybody,
I've been working on a program on my Linux box, after finished the code, i compile it with gcc -Wall option, so i can see what's wrong or unused.
The Walll output shows nothing, so there are no loose ends on the program.
I run the program on my system, and it works PERFECTLY.... (5 Replies)
Hi
I have struggling a week to fix a program , in the begining i got SIGBUS , but after many attempts still the program gets SIGSEGV segment fault , In bellow i post the seg fault log + source codes. would really appreciate if experts help me to fix this segment fault error. any advice is... (2 Replies)
Hello,
This function was copied into my code, which was compiled without error/warning, but when executed there is always Segmentation fault at the end after the output (which seems correct!):
void get_hashes(unsigned int hash, unsigned char *in)
{
unsigned char *str = in;
int pos =... (7 Replies)
Discussion started by: yifangt
7 Replies
LEARN ABOUT MINIX
strtok
STRTOK(3) Linux Programmer's Manual STRTOK(3)NAME
strtok, strtok_r - extract tokens from strings
SYNOPSIS
#include <string.h>
char *strtok(char *str, const char *delim);
char *strtok_r(char *str, const char *delim, char **saveptr);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
strtok_r(): _POSIX_C_SOURCE
|| /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
DESCRIPTION
The strtok() function breaks a string into a sequence of zero or more nonempty tokens. On the first call to strtok(), the string to be
parsed should be specified in str. In each subsequent call that should parse the same string, str must be NULL.
The delim argument specifies a set of bytes that delimit the tokens in the parsed string. The caller may specify different strings in
delim in successive calls that parse the same string.
Each call to strtok() returns a pointer to a null-terminated string containing the next token. This string does not include the delimiting
byte. If no more tokens are found, strtok() returns NULL.
A sequence of calls to strtok() that operate on the same string maintains a pointer that determines the point from which to start searching
for the next token. The first call to strtok() sets this pointer to point to the first byte of the string. The start of the next token is
determined by scanning forward for the next nondelimiter byte in str. If such a byte is found, it is taken as the start of the next token.
If no such byte is found, then there are no more tokens, and strtok() returns NULL. (A string that is empty or that contains only delim-
iters will thus cause strtok() to return NULL on the first call.)
The end of each token is found by scanning forward until either the next delimiter byte is found or until the terminating null byte ('