Load Array From Whitespace-delimited TextFile

This is a discussion on Load Array From Whitespace-delimited TextFile within the C Programming forums, part of the General Programming Boards category; Problem: I can read from the file, however the information is not doing what it should. I overlooked the fact ...

  1. #1
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    Load Array From Whitespace-delimited TextFile

    Problem: I can read from the file, however the information is not doing what it should. I overlooked the fact that the text file is whitespace-delimited by either spaces or tabs.

    Problem - need to load the array from a whitespce-delimited text file!
    **also, if anyone is bored, im not sure if my pointers from my functions to my declarations in main are correct or not**

    Code:
    Code:
    #pragma warning(disable : 4996)
    #include <stdio.h>
    #include <stdlib.h>
    
    #define bool int
    #define true 1
    #define false 0
    
    #define	in_filename "Prog1Data.txt"
    #define out_filename "Report.txt"
    #define maxsize 100
    
    /* function prototypess */
    int load (FILE *InFile, int *ary_nbr, int size);
    void printtab (FILE *OutFile, int *ary_nbr, int size);
    void classifydata (int *ary_nbr, int size, int *nCount_Pos, int *nCount_Neg, int *nCount_Zer);
    
    int main(int argc,char *argv[])
    {
    	/* statements for pos,neg,zer numbers */
    	int nCount_Pos = 0; 
    	int nCount_Neg = 0; 
    	int nCount_Zer = 0; 
    
    	/* declare array */
    	int ary_nbr[maxsize];
    
    	/* I/O pointers */
    	FILE *InFile, *OutFile;
    
    	/* error checking */
    	bool file_error_flag;
    
    	/* Open the file to read */
    	file_error_flag = false;
    
    	InFile = fopen(in_filename, "r");
    	if (InFile == NULL) 
    	{
    		printf("Error opening \"%s\"\n\n", in_filename);
    		file_error_flag = true;
    	}
    
    	/* Creates and Opens the Write File */
    	OutFile = fopen(out_filename, "w");
    	if (OutFile == NULL)
    	{
    		printf("Error opening \"%s\"\n\n", out_filename);
    		file_error_flag = true;
    	}
    
    	if (file_error_flag)
    	{
    		printf("\nProgram terminated due to FILE error!\n\n");
    		/* Identify problem file and close files that are open */
    		if (InFile == NULL)
    			printf("Error with %s\n",in_filename);
    		else
    			fclose(InFile);
    		if (OutFile == NULL)
    			printf("Error with %s\n",out_filename);
    		else
    			fclose(OutFile);
    	}
    	else /* Files open successfully */
    	{
    
    		load (InFile, ary_nbr, maxsize);
    		printtab (OutFile, ary_nbr, maxsize);
    		classifydata (ary_nbr, maxsize, &nCount_Pos, &nCount_Neg, &nCount_Zer);
    
    
    
    
    		
    		
    	}	
    
    	/* else file_error_flag */
    	return file_error_flag;
    
    	/* reports postive, negative, & zeros */
    	
    		/* positive */
    		printf("\nThe amount of positive numbers in the array are : %i\n", nCount_Pos);
    		fprintf(OutFile, "Number of positive numbers in the array are : %i\n", nCount_Pos);
    
    		/* negative */
    		printf("\nThe amount of negative numbers in the array are : %i\n", nCount_Neg);
    		fprintf(OutFile, "Number of positive numbers in the array are : %i\n", nCount_Neg);
    
    		/* zero */
    		printf("\nThe amount of zeros in the array are : %i\n", nCount_Zer);
    		fprintf(OutFile, "The amount of zeros in the array are : %i\n", nCount_Zer);
    
    	/* close files */
    		fclose(InFile);
    		fclose(OutFile);
    }
    
    int load (FILE *InFile, int *ary_nbr, int size)
    {
    	int i; /* array sunscript and loop control */
    
    	for (i = 0; i < size; ++i)
    	{
    		fscanf(InFile, "%i\t", &ary_nbr[i]);
    	}
    	
    	return ary_nbr[i];
    }
    
    void printtab (FILE *OutFile, int *ary_nbr, int size)
    {
    	int i;
    	for (i = 0; i < size; ++i)
    
    		fprintf(OutFile, "%7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\n", &ary_nbr[i]);
    		printf("%7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\n", &ary_nbr[i]);
    }
    
    void classifydata (int *ary_nbr, int size, int *nCount_Pos, int *nCount_Neg, int *nCount_Zer)
    {
    	int i;
    
    	*nCount_Pos = 0;
    	*nCount_Neg = 0;
    	*nCount_Zer = 0;
    
    	for(i = 0; i < size; i++)
    	{
    		if (ary_nbr[i] < 0)
    			*nCount_Neg++ ;
    		else if (ary_nbr[i] > 0)
    			*nCount_Pos++;
    		else if (ary_nbr[i] = 0)
    			*nCount_Zer++;
    	}
    
    //	return nCount_Pos, nCount_Neg, nCount_Zer;
    }

  2. #2
    and the Hat of Guessing tabstop's Avatar
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    Don't use \t. If you let %i alone, it will skip all whitespace (spaces, tabs, and new-lines) without any work on your part.

  3. #3
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    ok. well im supposed to be reading from a file that contains this:

    Code:
     -738	-1611	-2179	  -16	-1181	-3965	 -968	 -415	 2747	 -437	 -842	 -443
      358	 3783	  588	 1061	 2300	-4718	 4678	 3118	    0	-2390	 1985	-1993
    -3287	  -96	-4650	    0	-3199	 4354	 4535	  945	  346	  402	 4690	-4762
        0	-3367	 1225	-1296	 -184	 4836	 1679	-4552	-2859	  919	-4590	 1014
     1580	 2094	 2014	 1596	-2026	  383	 2022	-1880	-1139	  572	 4732	-1595
     4175	-1532	 4725	  412	 4044	  525	  486	 2315	 2716	 2217	    0	 -668
     2450	-1728	 4646	 3433
    i simply try to restate this data and it comes up as:

    Code:
    1244592	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244596	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244600	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244604	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244608	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244612	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244616	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244620	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244624	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244628	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244632	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244636	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244640	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244644	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244648	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244652	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244656	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244660	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244664	 1245032	 1244348	 2147344384	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460	 -858993460
    1244668	 1245032	 1244348	 2147344384
    does this mean im printing addresses instead of values?! how did this happen

  4. #4
    and the Hat of Guessing tabstop's Avatar
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    What makes you think this line
    Code:
    printf("%7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\t %7i\n", &ary_nbr[i]);
    is even a little bit legal?

  5. #5
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    lol i dont know. I have the array printing correctly now. Do you know how i could go about printing 10 numbers a line? ive look all over the inet and cant really find anything!

  6. #6
    and the Hat of Guessing tabstop's Avatar
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    Quote Originally Posted by pantherman34 View Post
    lol i dont know. I have the array printing correctly now. Do you know how i could go about printing 10 numbers a line? ive look all over the inet and cant really find anything!
    Really? Are you sure you just didn't recognize it when you saw it?
    Code:
    for (int i = 0; i < 10; i++) {
        printf("%d ", i);
    }

  7. #7
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    yes that works fine for the first 10...i want to print the entire array, but 10 fields a line.

  8. #8
    and the Hat of Guessing tabstop's Avatar
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    Quote Originally Posted by pantherman34 View Post
    yes that works fine for the first 10...i want to print the entire array, but 10 fields a line.
    So now that you know how to print 10 items on a line, do so repeatedly. Or alternatively, print each element in a loop, and decide based on [i] when to print a new-line.

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