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=={{header|C}}==
<lang c>#include <stdiostdlib.h>
#include <stdio.h>
int main(void) {
{
FILE *fh = tmpfile(); /* file is automatically deleted when program exits */
/* do stuff with stream "fh" */
(void) fclose(fh);
return EXIT_SUCCESS;
/* The C standard library also has a tmpnam() function to create a file
for you to open later. But you should not use it because someone else might
be able to open the file from the time it is created by this function to the
time you open it. */
return 0;
}</lang>
#include <stdio.h>
int main(void) {
{
const char *filename[] = "/tmp/prefixXXXXXX";
int fd = mkstemp(filename);
const int putsfd = mkstemp(filename);
(void) puts(filename);
/* do stuff with file descriptor "fd" */
(void) close(fd);
return 0EXIT_SUCCESS;
}</lang>
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