why is it not working??

Question

#include <stdio.h>
#include <conio.h>
void main()
{
int a,b,c ,x;
printf("enter\n1 for addition\n2 for substraction");
scanf("d%" , &x);
switch(x)
{
case 1 :

printf("press any random key");
scanf("%d", &a );
printf("press another key");
scanf("%d" ,&b);

c= a+b;
printf("sum is %d ", c);
break;

case 2:
printf("press any random key");
scanf("%d",&a);

printf("press another key");
scanf("%d" , &b);
c = a-b;
printf("substraction is %d",c);
break;
default:
printf("invalid");
}
}

Answer 1

scanf("%d", &x);

Answer 2

Thank you !!!!!😄😃