#include <stdio.h> 
int main() 
{ 
    fopen("file1.txt","w");    					//創建一個名為file1.txt的文件并將其打開
    fopen("file1.bin ", "wb"); 					//創建一個名為file2.bin的文件并將其打開
    if (fcloseall() == EOF) 						//使用fcloseall函數關閉全部文件流
        perror("Error"); 
    else 
        printf("streams were closed.\n"); 
    return 0; 
}