1 package main 2 3 func add(a int32, b int64) (sum int64) { 4 sum = int64(a) + b 5 return 6 } 7 8 func main() { 9 r := add(10, 20) 10 if r == 30 { 11 println("PASS: explicit widths work") 12 } else { 13 println("FAIL: explicit widths") 14 } 15 } 16