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For code that operates on {{FILE}} pointers and not file descriptors, the POSIX {{fdopen()}} function can be used to associate an open stream with the file descriptor returned by {{open()}}, as shown in this compliant solution \[[Open Group 04|AA. C References#Open Group 0504]\]. |
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char *file_name;
int new_file_mode;
FILE *fp;
int fd;
/* initialize file_name and new_file_mode */
fd = open(file_name, O_CREAT | O_EXCL | O_WRONLY, new_file_mode);
if (fd == -1) {
/* Handle Error */
}
fp = fdopen(fd, "w");
if (fp == NULL) {
/* Handle Error */
}
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