Flash cards
Review the key moves
What is the main idea behind Go if statement?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
Which statement best captures the main point of this lesson?
Complete the missing token from the example code.
// code to be executed ___ condition is truePut the learning moves in the order that makes the concept easiest to apply.
The if Statement
Use the if statement to specify a block of Go code to be executed if a condition is true .
Syntax
if
condition {
// code to be executed if condition is true
}Note that if is in lowercase letters. Uppercase letters (If or IF) will generate an error.
In the example below, we test two values to find out if 20 is greater than 18. If the condition is true , print some text:
Example
package main
import ("fmt")
func main() {
if 20 > 18 {
fmt.Println("20 is greater than 18")
}
}Example
package main
import ("fmt")
func main() {
x:= 20
y:= 18
if x > y {
fmt.Println("x is greater than y")
}
}We can also test variables
In the example above we use two variables, x and y , to test whether x is greater than y (using the > operator). As x is 20, and y is 18, and we know that 20 is greater than 18, we print to the screen that "x is greater than y".