test7_7.txt

linux under the C programming which complementary with the book of <linux under the C programming

#include <stdio.h>
#define MAXLINE 1024
int main(void)
{
    	char line[MAXLINE];
    	FILE *fp;
    
    	if(!(fp=tmpfile()))
    	{
        	printf("tempfile error");
        	exit(1);
    	}

    	if(!fputs("This is a temp file.\n", fp))
    	{
        	printf("write error.\n");
        	exit(1);
    	}

    	rewind(fp);
    	if(!fgets(line, sizeof(line), fp))
    	{
        	printf("read error.\n");
        	exit(1);
    	}

    	printf("%s\n", line);

    	exit(0);
}