erroneous output

Applications Programming
1

#include<stdio.h>
int main ()
{
FILE* f_read;
FILE* f_write;
char *string[80];
f_read=fopen("file1","r");

    while\(!feof\(f_read\)\);
  \{
            fscanf\(f_read,"%s",string\);
            fprintf\(stdout,"%s\\n",string\);
            \}

    return 0;
    \}

INPUT FILE
___________
manu
jilu
ruta

OUTPUT
-----------
manu
jilu
ruta
ruta

why the last line is being read two times

2

You are not error checking the return from your fscanf()

3

It isn't being read twice, it is being written(printed) twice. As porter has suggested, check the return value on your fscanf and exit if it is EOF.