import.c

从键盘获取字符并写入指定文件 按ctrl+c保存并退出

#include <stdio.h>
#include <signal.h>
#include <unistd.h>

FILE *fp;
int s;
char fn[10];

void mess(int sig)
{
	printf("\nData output and save: %s\n\n", fn);
	fclose(fp);
	fp = NULL;
	(void)signal(SIGINT,SIG_DFL);

	fp=fopen(fn,"r");
	if (fp==NULL){
			printf("Can't open the file!\n");
			exit(0);
			}
	while((s=getc(fp))!=EOF)
	printf("%c",s);
	fclose(fp);
	exit(0);
	//(void)signal(SIGINT,SIG_DFL);
}

main()
{
	(void)signal(SIGINT,mess);
	printf("Please input the filename: \n");
	scanf("%s",fn);

	/*creat a file*/
	fp=fopen(fn,"w");
	if(fp==NULL){
		printf("Can't creat the file");
		exit(0);
	}

	//(void)signal(SIGINT,mess);
	/*get a character from keyboard*/
	s=getchar();
	/*write a character to file*/
	while(s!='@'){
	putc(s,fp);
	putchar(s);
	s=getchar();
	}
	//(void)signal(SIGINT,mess);
//	fclose(fp);	

/*	while(1){
	printf("Please press CTRL-C save and exit\n");
	sleep(2);
	}*/
}