1 #include<stdio.h>
2 #include<stdlib.h>
3 #define WAY "save.txt"
4 int main(int argc,int argv[])
5 {
6 FILE *fp_read,*fp_write;
7
8 fp_read=fopen(WAY,"r+");
9
10 if(fp_read==NULL)
11 {
12 puts("Not exist,create now");
13 fp_write=fopen(WAY,"w+");
14 if(fp_write==NULL)
15 puts("Create failed");
16 else
17 {
18 puts("Create succeed");
19 fputs("good\n",fp_write); //写入文件：成功时返回非负值, 失败时返回EOF
20 fflush(fp_write); //将缓存区内的数据存入文档
21 fp_read=fp_write;
22 fseek(fp_write, 0, SEEK_SET); //将光标移动到文件结尾：SEEK_END，文件开头：SEEK_SET
23
24 }
25 }
26 else
27 puts("Open succeed");
28
29 //打印文件内容
30 rewind(fp_read); //将光标移动到文件开头
31 int ch = 0;
32 while((ch=fgetc(fp_read))!=EOF)
33 putchar(ch);
34
35 system("pause");
36
37
38 }
