We all know the trouble overflows can cause, and this is why strn* exist - and most of the time they make sense. However, I have seen code which uses strncmp to compare commandline parameters like so:
if(... strncmp(argv[i], "--help", 6) == 0
Now, I would have thought that this is unnecessary and perhaps even dangerous (for longer par...
Hello,
compiling with gcc C99
I am trying to compare 2 string using string compare.
However, I seem to be getting a stack dump on the strcmp line.
**attribute will contain these, so I am looking for frametype.
[name] [time] [type] [time]
[name] [callref] [type] [string]
[name] [port] [type] [int16]
[name] [frametype] [type] [int16]
...
Hi There,
If get a gring from the registry and it correctly displays when I place it in a message box.
::MessageBoxW(0, (LPCWSTR)achValue, _T("Found"), MB_YESNO);
The value is stored in archValue which is a DWORD. What I want to do is compare it to the following string "2.0.7045.0" but strcmp fails to work for me.
Any ideas on how to d...
Hi, I know this may be a totally newbie question (I haven't touched C in a long while), but can someone tell me why this isn't working?
printf("Enter command: ");
bzero(buffer,256);
fgets(buffer,255,stdin);
if (strcmp(buffer, "exit") == 0)
return 0;
If I enter "exit" it doesn't enter the if, does it have to do with the length of ...
I am writing a string compare function to sort medical terms that often contain special accented characters from many different European languages, and I need to somehow achieve a collation similar to MySQL's latin1_general_ci.
First, I'm doing some basic munging on the strings to remove spaces, quotes, hyphens, parentheses, etc. The pr...
I'm having trouble comparing strings in C (with which I am fairly new to). I have socket on this server application waiting to accept data from a client. In this particular portion of my program I want to be able to execute a MySQL query based on the data received from the client. I want to be able to know when the received data has the ...
Can anyone verify this for me? JavaScript does not have a version of strcmp(), so you have to write out something like:
( str1 < str2 ) ?
-1 :
( str1 > str2 ? 1 : 0 );
As this question is really just me complaining, I wouldn't normally waste your time with it, but I wasted 30 minutes looking for such a func...
I'm reading in an NES ROM file, where the first four bytes are "\x4e\x45\x53\x1a", or NES\x1a. In my actual code, the given file can be arbitrary, so I want to check to make sure this header is here. However, I'm running into some trouble, which the following code demonstrates:
#include <stdio.h>
#include <string.h>
int main()
{
FILE ...
I am having a bit of trouble using strtok with strcmp.
//Handles the header sent by the browser
char* handleHeader(char *header){
//Method given by browser (will only take GET, POST, and HEAD)
char *method,*path, *httpVer;
method = (char*)malloc(strlen(header)+1);
strcpy(method,header);
method = ...
Hi
I am using strcmp as shown below.
I am debugging the values and which are coming same but still not getting that condition true.
const char opcode_read[2] = {'0', '1'};
rc = recvfrom(s, blk_receive_full, sizeof (blk_receive_full), 0,(struct sockaddr FAR *)&sin, &fromlength);
if(rc == -1){
printf("failed: recvfrom, \n No data rec...
I want another condition --still maintaining a fast execution time but safer-- where i return false if either or both strings is empty:
int speicial_strcmp(char *str1, char* str2 )
{
if(*str1==*str2 =='\0')
return 0;
return strcmp(str1,str2);
}
...
I am writing a PHP page to convert an uploaded file to XML. I only want to convert the news file to XML. The only file that ever needs to be converted is news.htm. I have narrowed my problem down to this if statement. What is wrong with it?
$fileName = basename( $_FILES['uploaded']['name'] );
if( strcmp( $fileName, "news.htm") == 0 )
(...
I made a function like this:
bool IsSameString(char* p1, char* p2)
{
return 0 == strcmp(p1, p2);
}
The problem is that sometimes, by mistake, arguments are passed which are not strings (meaning that p1 or p2 is not terminated with a null character).
Then, strcmp continues comparing until it reaches non-accessible memory and cras...
I'm using strcmp to compare character arrays in c++, but I get the following error for every occurrence of strcmp: error: invalid conversion from 'int' to 'const char*' followed by: error: initializing argument 2 of 'int strcmp(const char*, const char*)'
I've include string, string.h, and stdio.h and here is my code, thanks to all who ...
I have a struct member that holds lots of string elements. What I want is to iterate the whole member of the struct and count only different elements (diff last names).
struct log {
char *last;
};
...
struct log *l
l->last = last_name; // loading *last member with data coming from last_name var
...
What would be a good way to com...
There's something really weird going on: strcmp() returns -1 though both strings are exactly the same. Here is a snippet from the output of the debugger (gdb):
(gdb) print s[i][0] == grammar->symbols_from_int[107][0]
$36 = true
(gdb) print s[i][1] == grammar->symbols_from_int[107][1]
$37 = true
(gdb) print s[i][2] == grammar->symbols_fr...
I want to allow the user to enter a coupon number in order to get a discount. After the coupon number is entered and submitted, the page reloads withe a tick showing that they have entered a correct amount.
The way I'm trying to do this is displaying the tick if the coupon amount is not £0.00. But the string comparison doesn't seem to ...
In MSVC++, there's a function strcmpi for case-insensitive C-string comparisons.
When you try and use it, it goes,
This POSIX function is deprecated beginning in Visual C++ 2005. Use the ISO C++ conformant _stricmp instead.
What I don't see is why does ISO not want MSVC++ to use strcmpi, and why is _stricmp the preferred way, and w...
Hey Folks,
strcmp, when fed the results of strtok, in the following code seems to be blatantly lying to me.
int fSize;
char * buffer=NULL;
char * jobToken = "job";
char * nextToken=NULL;
job * curJob=NULL;
struct node * head=NULL;
struct node * parseList(FILE* file){
fseek(file,0,SEEK_END);
fSize=ftell(file);
buffer = (cha...
I'm trying to compare two strings. One stored in a file, the other retrieved from the user (stdin).
Here is a sample program:
int main()
{
char targetName[50];
fgets(targetName,50,stdin);
char aName[] = "bob";
printf("%d",strcmp(aName,targetName));
return 0;
}
In this program, strcmp returns a value of -1 when ...