/* readfile.c  */ 

/* Check that a file exists. */ 
/* If it does, read it into an array and print it out. */ 


#include <string.h>   
#include <stdio.h> 



/*  Helper function, to let us see if a file */ 
/*  exists in the current directory.  */ 
int fexists(char *fname)
{  
   FILE *fptr;  
   fptr = fopen(fname, "r") ;     
   if ( !fptr )  return -1 ;  /* File does not exist in dir. */ 		 
   fclose(fptr);  
   return 0;    /* File DOES exist in dir.  */   
} 


/* Helper function to chop newlines off the lines read in. */ 
/* Without this being done, an extra newline is inserted */ 
/* (which is usually not what is wanted). */ 
void chop(char *s)
{
  s[strcspn(s,"\n")] = '\0';
}


/* An array to store the file in. */ 
/* Only 20 lines are read. */ 
char myarray[20][80];  


/* Read the file into the array of strings.  */ 
void readfile(char *fname) 
{ 
   int retval = fexists(fname); 
        
   int i; 
   if (retval == 0) { 
	  /* File exists, so open it. */  
	  /* We open it in read-write mode so we can */ 
	  /* append new commands to it. */ 
	  FILE *fptr;  
	  fptr = fopen(fname, "rw"); 
	 	  	   
	  for(i=0; i<20; i++)  
	  {  
		chop(fgets(myarray[i], 80, fptr) );  
	  }
	  
   }  /* retval == 0  */   	   
	
	else puts("Error! File does not exist. \n");  
	
} 	


void printfile(void) 
{ 
  int j; 
  	
  for(j=0; j<10; j++) 
     { 
        puts(myarray[j]);     	
     }    
		
} 	



int main(void) 
{ 

readfile("test.txt"); 

printfile(); 


return 0; 

}