[langage C] PB Suppresion déf variables

plop.c: In function ‘int main()’:
plop.c:439: warning: format ‘%s’ expects type ‘char*’, but argument 3 has type ‘char (*)[500]’
plop.c:440: warning: format ‘%s’ expects type ‘char*’, but argument 3 has type ‘char (*)[500]’
plop.c:448: warning: format ‘%s’ expects type ‘char*’, but argument 3 has type ‘char (*)[500]’
plop.c:362: warning: unused variable ‘imageWidth’
plop.c:363: warning: unused variable ‘imageHeight’
plop.c:364: warning: unused variable ‘bitPerPixel’
plop.c:365: warning: unused variable ‘planeNumber’
plop.c:376: warning: unused variable ‘File_Testing’
plop.c:394: warning: unused variable ‘bmpFileName’

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
//#include <conio.h> //mando
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>

//........

int main()
{

  // VARIABLES DECLARATION

  // Variables relative to the image characteristics
//  unsigned long imageWidth;          // Image width   //mando
//  unsigned long imageHeight;         // Image height  //mando
//  unsigned short bitPerPixel;        // = 8 for 256 color BMP image   //mando
//  unsigned short planeNumber;        // Number of planes : = 1 for 256 color images //mando
  unsigned short threshold=90;       // Threshold to distinguish between Iron and Grafit

  // Variables relative to the pixel position
  unsigned long pixIdx;             // pixel index number
  unsigned long colIdx;             // column index number
  unsigned long rowIdx;             // row index number
  unsigned long depthIdx;           // image number
  unsigned long nodIdx;             // node index number

  // Variable to test the existence of the input file
//  unsigned int File_Testing;  //mando

  // Variable to count the number of files in the folder
  unsigned int File_Number;

  // Variables to read the folder, extract the list of files
  struct dirent *lecture;
  char path[512]; //mando
  DIR *rep;
  FILE *File_List;
  FILE *File_Coordinates;
  BMPFILE * bmpf ;
  byte *bitmap ;

  // Variables to save the list of files to analyse
  char list[500];
  char files_names[500];
//  char bmpFileName[200];  //mando

//...................

   do
   {
       printf("Path: ");
       scanf("%s",&path); //mando
       printf("\n");
       if(path[strlen(path)-1]!='/')
           strcat(path,"/");
   } while((rep = opendir(path)) == NULL);

//...................

   fclose(File_List);
   fclose(File_Coordinates);
   printf("\n\n\tAnalysis complete, please check Coordinates.txt to retrieve data\n\n");
//   system("PAUSE"); //mando
   getchar(); //mando
   return(0)
}