Fehler bei scanf_s

#include <stdio.h>

// Berechnung CRC16

// ----------------

unsigned int CRC16(unsigned int crc, unsigned int data)

{

const unsigned int Poly16=0xA001;  //Generatorpolynom

unsigned int LSB, i;

crc = ((crc^data) | 0xFF00) & (crc | 0x00FF);

for (i=0; i<8; i++)

{

LSB=(crc & 0x0001);

crc=crc/2;

if (LSB)

crc=crc^Poly16;

}

return(crc);

}

int main()

{

/*unsigned*/ char NumData;  

/*unsigned*/ char InputByte; 

/*unsigned*/ char i,data[255]/*={01,43,14,01,00}*/; // Telegrammbuffer

unsigned char Crc_HByte,Crc_LByte; //

unsigned int Crc;

/*Einlesen des Wortes Problemzone*/

printf("Anzahl der Bytes: ");

scanf_s("%d",&NumData);

printf("Anzahl der Bytes = %d\n",NumData);

for (i=0; i<NumData;i++)

{

  printf("Wert Byte:" );

  scanf_s("%d",&InputByte);   

  data[i]= InputByte;

}

printf("Wert data: %d\n %d\n %d\n %d\n %d\n" ,data[0],data[1],data[2],data[3],data[4]);

/*keine Probleme*/

Crc=0xFFFF;

for (i=0; i<NumData; i++) 

{

Crc = CRC16 (Crc, data[i] );

}

Crc_LByte = (Crc & 0x00FF); // Low-Byte bestimmen

Crc_HByte = (Crc & 0xFF00) / 256; // High-Byte bestimmen

printf("LByte %d\n",Crc_LByte);

printf("HByte %d\n",Crc_HByte);

while (1)

{;

;}

}