GL bitmap

#include <iostream>
#include <stdio.h>
#include <GL/glut.h>


#include "stdlib.h"
#include "windows.h"
#include "math.h"

BITMAPFILEHEADER bitmapFileHeader;
BITMAPINFOHEADER bitmapInfoHeader;
unsigned char* bitmap_Image;


void ReadBitmap(const char* FileName)
{

    FILE *file=fopen(FileName,"rb");


        if (bitmapInfoHeader.biSizeImage != 0)
            bitmap_Image = (unsigned char*)calloc(bitmapInfoHeader.biSizeImage, sizeof(unsigned char));

    if (!bitmap_Image)
    {
        free(bitmap_Image);
        fclose(file);
        return;
    }

    fread(bitmap_Image, bitmapInfoHeader.biSizeImage,1, file);
    int pixCnt = 0;
    int inc = (4 - (int)fmod((double)bitmapInfoHeader.biWidth*3, 4)) ; //every line is formed by 32bits parts
    if (inc == 4) inc = 0;
    int rowEndIndex = bitmapInfoHeader.biWidth*3; //first row
    for (int i = 0; i < (bitmapInfoHeader.biHeight); i++)
    {
        printf("new line\n");
        for (int cnt=pixCnt; cnt < rowEndIndex; cnt+=3,pixCnt+=3)
        {
                printf("/b - %d",bitmap_Image[cnt]);
                printf("/g - %d",bitmap_Image[cnt + 1]);
                printf("/r - %d\n",bitmap_Image[cnt + 2]);
        }
        pixCnt+=inc;
        rowEndIndex+=bitmapInfoHeader.biWidth*3 + inc;

    }
}


void renderScene(void) {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    ReadBitmap(/* file path */);
    glBitmap(838,837,0,0,0,0,bitmap_Image);


        glutSwapBuffers();
}

int main(int argc, char **argv) {

    // init GLUT and create Window
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);
    glutInitWindowPosition(100,100);
    glutInitWindowSize(320,320);
    glutCreateWindow("Test");

    // register callbacks
    glutDisplayFunc(renderScene);

    // enter GLUT event processing cycle
    glutMainLoop();

    return 1;
}