Where did I go wrong? I\'ve written the code but can\'t get it to \"print the ou

Question

Where did I go wrong? I've written the code but can't get it to "print the output to screen" - in other words, the code doesn't display the change from lower case letters to upper case letters. I don't need the program to display the letters, character or letter counts.

Here's the assignment:

Have a program prompt the user for a filename to open. Change every alphabetic character in the file to a capital letter. Numbers and special characters should not be changed. Print the output to the screen.

Here's what I have so far:

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

#define BUFLEN 128

int main()

{

    char line[ BUFLEN ],

         filename[ BUFLEN ],

         c,

         *p;

    int chars = 0, letters = 0, lines = 0;

    FILE* inFile;

    printf( "Please enter the name of a file: " );

    fflush( stdout );

    fgets( filename, 128, stdin );

    p = strchr( filename, ' ' );

    if( p ) * p = '';

    else while( getchar() != ' ' ) ;

    inFile = fopen( filename, "r" );

    if( inFile )

    {

        while( fgets( line, BUFLEN, inFile ) )

        {

            ++lines;

            printf( "%s", line );
        }

        rewind( inFile );

        printf( " File contents with line numbered: " );

        while( ( c = fgetc( inFile )) != EOF )

        {

            ++chars;

            if( isalpha( c ) )

            {

                printf( " %d : ", chars );

                ++letters;

                putchar(c );

            }

        }

        fclose( inFile );

    }

    else

    {

        printf( " The file %s was not successfully opened.", filename );

        printf( " Please make sure the specified file exists. " );

    }

    printf( " lines = %d, chars = %d, letters = %d ", lines, chars, letters );

    printf( "Press 'Enter' to continue/exit ... " );

    fflush( stdout );

    getchar();

    return 0;

}

Explanation / Answer

printf( " The file %s was not successfully opened.", filename ); should be printf( " The file %s was not successfully opened.",tolower(filename );

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