go questions

2026-08-30 浏览 (1)

Which one is a correct type conversion expression?

convert(40)
var("hi")
int(4.) CORRECT
int[4]

What does this code print?

age := 6.5
fmt.Print(int(age))

6.5
65
6 CORRECT
.5

When you convert a float to integer It loses its fractional part

What does this code print?

fmt.Print(int(6.5))

6.5
65
6
Compile-Time Error CORRECT

Go can detect conversion errors at the compile-time

What does this code print?

area := 10.5
fmt.Print(area/2)

5.25 CORRECT
5
0
Error

What does this code print?

area := 10.5
div := 2
fmt.Print(area/div)

5.25
5
ERROR CORRECT

You can't divide different type of values. You need to convert: area / float64(div)

Which code below can fix the following code?

area := 10.5
div := 2
fmt.Print(area/div)

fmt.Print(int(area)/div) // 5
fmt.Print(area/int(div)) // type mismatch
fmt.Print(int(area)/int(div)) // 5
fmt.Print(area/float64(div)) CORRECT

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