In the previous exercises we checked one condition at a time. But what if we wanted to check multiple conditions at a time? To do so, we can use logical operators. There are three logical operators:

In this exercise, we’ll focus on the first two, && and ||. When we use the And (&&) operator, we are checking that both expressions are true:

if storeLights == "on" && doorsOpen {
  fmt.Println("You can enter the store!")
} 

When using the && operator, both conditions must evaluate to true for the entire condition to evaluate to true and execute. Otherwise, if either condition evaluate as false, the && condition will evaluate to false and the code inside the if block will not execute.

If we only care about either condition being true, we can use the Or (||) operator:

if day == "Saturday" || day == "Sunday" {
  fmt.Println("Enjoy the weekend!")
} else {
  fmt.Println("Do some work.")
}

When using the || operator, only one of the conditions must evaluate to true for the overall statement to evaluate to true. In the code example above, if either day == "Saturday" or day == "Sunday" is true the statement’s code block will execute. If the first operand in the || expression evaluates to true, the second operand won’t even be checked. Only if day == "Saturday" evaluates to false will day == "Sunday" be evaluated. The code in the else statement above will execute only if both comparisons evaluate to false.

Let’s implement these operators to add an additional layer of logic!