I have a program which I wish to modify. It used to be run from the command line, but now I wish to change this so it can be used as a function.
The program has complex argument processing so I want to pass my paramters to as if it were being called by the OS as a program.
I have tried to... (2 Replies)
I searched on the forums. No advises.
I am using a previous source code. I changed the main function main(int argc, char **argv) in a function misc(int argc, char **argv). How do you use the argc and argv parameters? This is how I am calling the function :
char param;
strcat(param,"wgrib ");... (4 Replies)
I have a script that asks a bunch of questions using the following method for input:
print "Name:";
while(<>){
chomp;
$name=$_;
}
So for example, if the questions asked for name, age, & color (in that order)... I want to be able to easily convert $ARGV into the input expected by... (2 Replies)
Hi C experts,
I have the following code for adding command line option for a program
int main (argc, argv)
int argc;
char *argv;
{
char *mem_type; //memory type
char *name; //name of the memory
int addr; //address bits
int data; ... (5 Replies)
this is in one of my scripts...
if ($#argv == 0) then
echo 'blah bla'
exit 0
endif
I want it to be something like this...
if ($#argv == 0 OR $argv >=3)
echo 'blah bla'
exit 0
endif
so when the arguments are none, or greater than three I want this "if then" to take over. how? I... (5 Replies)
Hello all,
Had a quick question:
In a typical csh script should inputting via stdin (i.e. set i = $< ) increase the value of $#argv ?
echo enter an value:
set val= "$<"
if($#argv == 0) then
echo No args
else
echo The arg is $argv
so if a value is inputted #argv... (1 Reply)
when i run my program, i have a parameter, that i want to set the value to another string
i am using
int main(int argc, char **argv) {
char my_str=argv;
printf("%s",my_str);
return 0;
}
and i get
Segmentation fault
ran using
./my_prog /usr/share/dict/words hello1
... (2 Replies)
I'm working on my own pow function and I need to make a copy of *argv but
I think that I am having trouble with the size of *argv and the size of any array that I
make. The code below isn't working for me. and I want to accept any number no
matter the size with pow -f 2 2. I was working out... (16 Replies)
All of my machines (various open source derivatives on x86 and amd64) store argv above the stack (at a higher memory address). I am curious to learn if any systems store argv below the stack (at a lower memory address).
I am particularly interested in proprietary Unices, such as Solaris, HP-UX,... (9 Replies)
So i am trying to read in file
readFile <GivenFile> modFile
looking for a regular file under the directories in the GivenFile and print them out is my over all goal.
basically I am looking for anything that looks like a directory in the given file and printing it out.
Since I am trying to do... (2 Replies)
Discussion started by: squidGreen
2 Replies
LEARN ABOUT MINIX
director
DIRECTORY(3) Library Functions Manual DIRECTORY(3)NAME
directory, opendir, readdir, rewinddir, closedir, telldir, seekdir - directory routines
SYNOPSIS
#include <sys/types.h>
#include <dirent.h>
DIR *opendir(const char *dirname)
struct dirent *readdir(DIR *dirp)
void rewinddir(DIR *dirp)
int closedir(DIR *dirp)
#define _MINIX 1
#include <sys/types.h>
#include <dirent.h>
long telldir(DIR *dirp)
int seekdir(DIR *dirp, long pos)
DESCRIPTION
These routines form a system independent interface to access directories.
Opendir() opens the directory dirname and returns a pointer to this open directory stream.
Readdir() reads one entry from the directory as a pointer to a structure containing the field d_name, a character array containing the
null-terminated name of the entry.
Rewinddir() allows the directory to be read again from the beginning.
Closedir() closes the directory and releases administrative data.
The Minix specific functions telldir() and seekdir() allow one to get the current position in the directory file and to return there later.
Seekdir() may only be called with a position returned by telldir() or 0 (rewind). These functions should not be used in portable programs.
SEE ALSO dir(5).
DIAGNOSTICS
Opendir() returns a null pointer if dirname can't be opened, or if it can't allocate enough memory for the DIR structure.
Readdir() returns null if there are no more directory entries or on error.
Closedir() and seekdir() returns 0 on success, -1 on error.
Telldir() returns -1 on error.
All of them set errno appropriately. Readdir() will only set errno on error, not on end-of-dir, so you should set errno to zero before-
hand, and check its value if readdir() returns null.
NOTES
The return value of readdir() needs to be copied before the next operation on the same directory if it is to be saved.
AUTHOR
Kees J. Bot (kjb@cs.vu.nl)
DIRECTORY(3)