Problem in opening a file!

Applications Programming
1

Hello All,
I am new to programming in unix.
I am trying to create a file by using open command. The entire file is :

#include<fcntl.h>
main(void){
int fd;
fd = open("File1", O_CREAT|O_WRONLY, S_IRUSR|S_IWUSR|S_IRWXO);
printf("%d ", fd);
}

The problem I am facing a strange problem. When I execute the above file (using gcc), I dont see File1 getting created! But if I change the filename with any other name (say File2), I am able to get create the file!

Could anyone pls tell me what could be happening?

Regards,
karthik

2

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3

Dear Friend,

Your code in correct. But you need to include the necessary header files.

I ran your code. It is not working. It showed me some error. After that I include the some header files. Then your code is working fine.

#include<stdio.h>
#include<fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>

main(void){
        int fd;
        fd = open("File1", O_CREAT|O_WRONLY, S_IRUSR|S_IWUSR|S_IRWXO);
        printf("%d ", fd);
}

You need to include above two header files.