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1.       fcloseº¯Êý
fcloseº¯ÊýµÄ¹¦ÄÜÊǹرÕÒ»¸öÁ÷£¬ÆäÓ÷¨ÊÇ£ºint fclose(FILE *stream); ³ÌÐòÀý×ÓÈçÏ£º
#include <string.h>
#include <stdio.h>
int main(void)
{
   FILE *fp;
   char buf[11] = "0123456789";
   /* create a file containing 10 bytes */
   fp = fopen("DUMMY.FIL", "w");
   fwrite(&buf, strlen(buf), 1, fp);
   /* close the file */
   fclose(fp);
   return 0;
}
2.       fcloseallº¯Êý
fcloseallº¯ÊýµÄ¹¦ÄÜÊǹرմò¿ªÁ÷£¬ÆäÓ÷¨ÊÇ£ºint fcloseall(void); ³ÌÐòÀý×ÓÈçÏ£º
#include <stdio.h>
int main(void)
{
   int streams_closed;
   /* open two streams */
   fopen("DUMMY.ONE", "w");
   fopen("DUMMY.TWO", "w");
   /* close the open streams */
   streams_closed = fcloseall();
   if (streams_closed == EOF)
      /* issue an error message */
      perror("Error");
   else
      /* print result of fcloseall() function */
      printf("%d streams were closed.\n", streams_closed);
   return 0;
}
3.       fcvtº¯Êý
fcvtº¯ÊýµÄ¹¦ÄÜÊÇ°ÑÒ»¸ö¸¡µãÊýת»»Îª×Ö·û´®£¬ÆäÓ÷¨ÊÇ£ºchar *fcvt(double value, int ndigit, int *decpt, int *sign); ³ÌÐòÀý×ÓÈçÏ£º
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
int main(void)
{
   char *string;
   double value;
   int dec, sign;
   int ndig = 10;
   clrscr();
   value = 9.876;
   string = ecvt(value, ndig, &dec, &sign);
   printf("string = %s     


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curl c api

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