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package main
func f1(i int) bool {
switch j := i; j {
case 3: fallthrough
case 1: return true
case 2: return false
default: return false
case 4: return true
}
}
func f2(i int) int {
switch {
case i < 0: return -1
case i > 0: return 1
default: return 0
case i != 0: return 1000
}
panic(0)
}
func f3(i int) int {
lab:
switch i {
case 1: break
case 2: return 2
case 3, 4:
switch i {
case 3: break lab
case 4: break
}
return 4
}
return 1
}
func main() {
if !f1(1) {
panic(1);
}
if f1(2) {
panic(2);
}
if !f1(3) {
panic(3);
}
if !f1(4) {
panic(4);
}
if f1(5) {
panic(5);
}
if f2(-100) != -1 {
panic(6);
}
if f2(1000) != 1 {
panic(7);
}
if f2(0) != 0 {
panic(8);
}
if f3(1) != 1 || f3(2) != 2 || f3(3) != 1 || f3(4) != 4 {
panic(9);
}
}
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