Answer P3

a=77    *pa=77

#include <stdio.h>
int main( void )
{
  int  a ;
  int *pa ;
  
  pa  = &a ;
  *pa = 77 ;
 
  printf("a=%d   *pa=%d\n", a, *pa );

  return 0;
}

So far, all our examples have the same picture and print the same thing. But each is different in the details.