Sum of Two Number: C Program

#include<stdio.h>
#include<conio.h>
void main()
{
   int a,b,sum;
   printf("Enter The Value Of a");
   scanf("%d",a);

   printf("Enter The Value Of b");
   scanf("%d",b);
sum=a+b;
   printf("Sum Value =%d",sum);
getch();
        }