tempfiles.c

来自「unix环境编程」· C语言 代码 · 共 24 行

#include "apue.h"

int
main(void)
{
	char	name[L_tmpnam], line[MAXLINE];
	FILE	*fp;

	printf("%s\n", tmpnam(NULL));		/* first temp name */

	tmpnam(name);						/* second temp name */
	printf("%s\n", name);

	if ((fp = tmpfile()) == NULL)		/* create temp file */
		err_sys("tmpfile error");
	fputs("one line of output\n", fp);	/* write to temp file */
	rewind(fp);							/* then read it back */
	if (fgets(line, sizeof(line), fp) == NULL)
		err_sys("fgets error");
	fputs(line, stdout);				/* print the line we wrote */

	exit(0);
}