Thread: number of occerrence of words

Hi,
I'm trying to write a program for the number of occerrence of a word from a file,
so I need to open a user input file as argv[1] and get the search word from argv[2] and print out the number of occerrence of that word.
can someone help me please.

Code:

#include <stdio.h>
#include <ctype.h>
#include <stdafx.h>
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <string.h>



int process_file( FILE *fp );


int _tmain(int argc, _TCHAR* argv[])
{
  if ( argc > 1 ) {
    FILE *fp = fopen( argv[1], "r" );

    if ( fp ) {
      if ( !process_file( fp ) ) {
        // failure means a stream error or bad file
        perror( "error reading from the file" );
      }

      fclose( fp );
    } else {
      perror( "error opening the file" );
    }
  } else {
    fprintf( stderr, "usage: prog <filename>\n" );
  }

  return 0;
}


int process_file( FILE *fp ) {
	char buff[1000]={0},
		 tempStr[300]={0},
		 *tokenPtr;
       
    int n = 0;
  while ( fgets( tempStr, sizeof tempStr, fp ) != NULL ) {
	  strcat( buff, tempStr );
  }
  tokenPtr = strtok( buff, ". !, \n" );

  do {
	  n=strcmp (tokenPtr,argv[2]);
	  n++;
  }while ( tokenPtr != NULL );
  tokenPtr = strtok( NULL, " ! -.,\n" );
  printf( "%8s%15s\n", "searched Word", "Occurrences" );
  printf("%4c%4d",argv[2],n);
}

how long have you been programming for? because that sure looks very complicated!!!

not very long,
but I'm really desperate for this program,
I have to get it working soon, It's my university project.

When you call process_file(), you probably want to pass "argv[2]" to that function, rather than using it as if it was a global. This function doesn't have a "argv" parameter, so it's an unknown variable in that function.

--
Mats

I tried the following but it still doesn't work.

Code:

int process_file( FILE *fp ) {
	char buff[1000]={0},
		 tempStr[300]={0},
		 string[100]={argv[2]},
		 *tokenPtr;
	       
    int n = 0;
  while ( fgets( tempStr, sizeof tempStr, fp ) != NULL ) {
	  strcat( buff, tempStr );
  }
  tokenPtr = strtok( buff, ". !, \n" );
   do {
	  n=strcmp (tokenPtr,string);
	  n++;
  }while ( tokenPtr != NULL );
  tokenPtr = strtok( NULL, " ! -.,\n" );
  printf( "%8s%15s\n", "searched Word", "Occurrences" );
  printf("%4c%4d",string,n);
}

Also, use a const char array for your "strtok" second parameter (so that you don't copy the same string literal twice, potentially creating bugs by having them different), and add to it: ":;?\t". (You may need to add more if the text you are parsing is something like program code, such as "()[]/+-%&" etc. Quotes would also count as word separators, I would think.



--
Mats

when I try to run the code above it still gives me the following error:

error C2065: 'argv' : undeclared identifier

what should I do to fix that.

You aren't passing argv[2] to process_file, you are just trying to USE that in the function.

--
Mats

sorry for being slow but how can I pass argv[2] to process_file.

Something like "process_file(fp, argv[2])" perhaps?

--
Mats