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My program does not open the infile I am trying to find it out but I could not please help. Thank you!

// Copies a BMP file
#include <stdio.h>
#include <stdlib.h>

#include "bmp.h"

int main(int argc, char *argv[])
{
    // ensure proper usage
    if (argc != 3)
    {
        fprintf(stderr, "Usage: copy infile outfile\n");
        return 1;
    }

    // remember filenames
    char *infile = argv[1];
    char *outfile = argv[2];

    // open input file
    FILE *inptr = fopen(infile, "r");
    if (inptr == NULL)
    {
        fprintf(stderr, "Could not open %s.\n", infile);
        return 2;
    }

    // open output file
    FILE *outptr = fopen(outfile, "w");
    if (outptr == NULL)
    {
        fclose(inptr);
        fprintf(stderr, "Could not create %s.\n", outfile);
        return 3;
    }

    // read infile's BITMAPFILEHEADER
    BITMAPFILEHEADER bf;
    fread(&bf, sizeof(BITMAPFILEHEADER), 1, inptr);

    // read infile's BITMAPINFOHEADER
    BITMAPINFOHEADER bi;
    fread(&bi, sizeof(BITMAPINFOHEADER), 1, inptr);

    // ensure infile is (likely) a 24-bit uncompressed BMP 4.0
    if (bf.bfType != 0x4d42 || bf.bfOffBits != 54 || bi.biSize != 40 ||
        bi.biBitCount != 24 || bi.biCompression != 0)
    {
        fclose(outptr);
        fclose(inptr);
        fprintf(stderr, "Unsupported file format.\n");
        return 4;
    }

    // write outfile's BITMAPFILEHEADER
    fwrite(&bf, sizeof(BITMAPFILEHEADER), 1, outptr);

    // write outfile's BITMAPINFOHEADER
    fwrite(&bi, sizeof(BITMAPINFOHEADER), 1, outptr);

    // determine padding for scanlines
    int padding = (4 - (bi.biWidth * sizeof(RGBTRIPLE)) % 4) % 4;

    // iterate over infile's scanlines
    for (int i = 0, biHeight = abs(bi.biHeight); i < biHeight; i++)
    {
        // iterate over pixels in scanline
        for (int j = 0; j < bi.biWidth; j++)
        {
            // temporary storage
            RGBTRIPLE triple;

            // read RGB triple from infile
            fread(&triple, sizeof(RGBTRIPLE), 1, inptr);

            // removing the red nose
            if (triple.rgbtRed == 255)
            {
                triple.rgbtRed = 255;
                triple.rgbtGreen = 255;
                triple.rgbtBlue = 255;
            }
            else if (triple.rgbtRed > 230 && triple.rgbtRed < 255)
            {
                triple.rgbtRed = 230;
                triple.rgbtGreen = 230;
                triple.rgbtBlue = 230;
            }
            else if (triple.rgbtRed > 200 && triple.rgbtRed < 230)
            {
                triple.rgbtRed = 200;
                triple.rgbtGreen = 200;
                triple.rgbtBlue = 200;
            }
            else if (triple.rgbtRed > 150 && triple.rgbtRed < 200)
            {
                triple.rgbtRed = 150;
                triple.rgbtGreen = 150;
                triple.rgbtBlue = 150;
            }
            else if (triple.rgbtRed < 150 && triple.rgbtRed > 100)
            {
                triple.rgbtRed = 100;
                triple.rgbtGreen = 100;
                triple.rgbtBlue = 100;
            }
            else if (triple.rgbtRed > 0 && triple.rgbtRed < 100)
            {
                triple.rgbtRed = 0;
                triple.rgbtGreen = 0;
                triple.rgbtBlue = 0;
            }

            // write RGB triple to outfile
            fwrite(&triple, sizeof(RGBTRIPLE), 1, outptr);
        }

        // skip over padding, if any
        fseek(inptr, padding, SEEK_CUR);

        // then add it back (to demonstrate how)
        for (int k = 0; k < padding; k++)
        {
            fputc(0x00, outptr);
        }
    }

    // close infile
    fclose(inptr);

    // close outfile
    fclose(outptr);

    // success
    return 0;
}
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  • The input file exists, is in the right path, and you provide the correct name (including the .bmp ending, and case-sensitive)? Can you, as an edit to your question, provide a sample of how you call the programme, its output, and the output of ls (means "list" files/directories) in the same directory? – Blauelf Oct 8 '18 at 9:20
  • Thank you very much my mistake was on the execution of file. Again thank you very much. God give you more wisdom and BLESS you mighty(^I^) – Bethuel Mavhungu Oct 8 '18 at 10:34
  • Looks like this is answered. Can one of you post it as an answer? – Cliff B Oct 8 '18 at 22:46

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