#include <stdio.h>

/**
 * Replace all the ?'s so that this becomes a working program:
 */

int main(void)
{
  // Define two integers to hold the a and b values:
  int a, b;

  // Modify the printf to print the prompt: a? 
  printf("a? ");
  // Note how there is no newline at the end, this leaves the cursor on the same line
  // as the prompt so the scanf will read the integer you type just after the prompt.
  
  // Modify the scanf to read an integer into the variable a:
  scanf("%d", &a);
  // We don't check that scanf is successful (user could have entered a non-integer),
  // but we probably should check.

  // Modify the printf to print the prompt: b? 
  printf("b? ");
  // Modify the scanf to read an integer into the variable b:
  scanf("%d", &b);

  // Complete the printf:
  printf("%d + %d = %d\n", a, b, a+b);

  return 0;
}