函数名: fclose 
 功  能: 关闭一个流 
 用  法: #include <stdio.h> 
         int fclose(FILE *stream); 
 程序例: 
#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; 
 }