Linux文件编程demo13文件其他函数讲解及文件收尾.c

 #include <stdio.h>
 #include <stdlib.h>
 int main()
 {
	 FILE *fp;
	 int i;
	 char *str = "longhaiyang heng ai sasa";
	 int len = strlen(str);
     fp = fopen("./test","w+");
     
     for(i=0;i<len;i++)
	 {
		 fputc(*str,fp); //fputc('a',fp);
		 str++;
		 
	 }		 
	 fclose(fp);
	 return 0;
 }
 
 
#include <stdio.h>
#include <string.h>
//fgetc feof
int main()
{
   FILE *fp;
   int i;
   char c;
   fp = fopen("./test.txt","r");

   while(!feof(fp)){  //feof()用来判断是否到了文件末尾  没到返回0  到了返回非0

       c = fgetc(fp);
       printf("%c",c);
     }
   fclose(fp);
   return 0;
}```