I want to my manipulate Stdin, then Std* but some errs:
$ gcc testFd.c
testFd.c:9: error: initializer element is not constant
testFd.c:9: warning: data definition has no type or storage class
testFd.c:10: error: redefinition of `fd'
testFd.c:9: error: `fd' previously defined here
testFd.c:10: error: `mode' undeclared here (not in a function)
testFd.c:10: error: initializer element is not constant
testFd.c:10: warning: data definition has no type or storage class
testFd.c:12: error: syntax error before string constant
$ cat testFd.c
#include <stdio.h>
#include <sys/ioctl.h>
int STDIN_FILENO = 1;
// I want to access typed
// Shell commands, dunno about the value:
unsigned long F_DUPFD;
fd = fcntl(STDIN_FILENO, F_DUPFD, 0);
fd = open("/dev/fd/0", mode);
printf("STDIN = %s", fd);
Updated Errs: just trying to get an example program about file descriptors to work in C, pretty lost with the err report
$ cat testFd.c
#include <stdio.h>
#include <sys/ioctl.h>
int main (void) {
int STDIN_FILENO;
// I want to access typed
// Shell commands, dunno about the value:
unsigned long F_DUPFD;
int fd;
const char mode = 'r';
fd = fcntl(STDIN_FILENO, F_DUPFD, 0);
/* also, did you mean `fopen'? */
fd = fopen("/dev/fd/0", mode);
printf("STDIN = %s", fd);
return 0;
}
$ gcc testFd.c
testFd.c: In function `main':
testFd.c:14: warning: passing arg 2 of `fopen' makes pointer from integer without a cast
testFd.c:14: warning: assignment makes integer from pointer without a cast