C语言实例 从键盘输入一些字符，逐个把它们送到磁盘上去，直到输入一个#为止

#include 

main()
{
	FILE *fp;
	char ch, filename[10];
	scanf("%s", filename);
	if((fp=fopen(filename, "w")) == NULL)
	{
		printf("Cannot open file\n");
		exit(0);
	}
	ch = getchar();/*此处为回车符*/
	ch = getchar();
	while(ch!='#')
	{
		fputc(ch, fp);/*Writes a charater to a stream*/
		putchar(ch);/*Write a charater to stdout*/
		ch = getchar();
	}
	fclose(fp);
}