PINROCA

void ConverttoGray(FILE *file, PIXEL **pixels, BITMAPFILEHEADER fileHeader, BITMAPINFOHEADER infoHeader, int width, int height){
    FILE *convertedfile;
    PIXEL **convertedpixels;
    PIXEL padd = {0,0,0};
    int sizePixel, padding, i, j;

    sizePixel = getSizePixel();

    convertedpixels = (struct PIXEL **)malloc(height * sizeof(struct PIXEL*));
    for(i = 0; i < height; i++){
        convertedpixels[i] = (struct PIXEL *)malloc(width * sizeof(sizePixel));
    }
    for(i = 0; i < height; i++){
        for(j = 0; j < width; j++){
            convertedpixels[i][j].blue = (image.pixels[i][j].blue+image.pixels[i][j].green+image.pixels[i][j].red)/3;
            convertedpixels[i][j].red = (image.pixels[i][j].blue+image.pixels[i][j].green+image.pixels[i][j].red)/3;
            convertedpixels[i][j].green = (image.pixels[i][j].blue+image.pixels[i][j].green+image.pixels[i][j].red)/3;
        }
    }
    convertedpixels = fopen("converted-file-gray.bmp", "wb");
    fwrite(&fileHeader, FILE_HEADER_SIZE, 1, convertedpixels);
    fwrite(&infoHeader, INFO_HEADER_SIZE, 1, convertedpixels);

    padding = getPadding(width);

    for(i = 0; i < height; i++){
        fwrite(convertedpixels[i], width, BYTES_PER_PIXEL, convertedpixels);
        fwrite(&padd, padding, BYTES_PER_PIXEL, convertedpixels);
    }

    fclose(file);

}