Why is the results wrong?

Question

When I run the program the numbers it gives me are totally wrong.

{
  int a, b;
  double molt, per1, per2;
  
  
  printf("enter salary per hour:  ");
  scanf("%d", &a);
  printf("enter hours worked per month:  ");
  scanf("%d", &b);
  molt = a * b;
  per1 = molt * 82 / 100;
  per2 = molt * 90 / 100;
 if(molt > 5000)
 {printf("salary per month is:%d ",&per1);}
 else {printf("salary per month is:%d ",&per2);}
 

}

Answer 1

printf("salary per month is:%d ",&per1);

You are trying to print a double (long float), however, the format specifier is %d (decimal), not %lf (long float). Also, you are not actually printing the variable, but the address of the variable (& --> address-of operator).

Try this instead:

printf("salary per month is: %lf ",per1);