1 // run 2 3 // Copyright 2009 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 // Test for loops. 8 9 package main 10 11 func assertequal(is, shouldbe int, msg string) { 12 if is != shouldbe { 13 print("assertion fail", msg, "\n") 14 panic(1) 15 } 16 } 17 18 func main() { 19 var i, sum int 20 21 i = 0 22 for { 23 i = i + 1 24 if i > 5 { 25 break 26 } 27 } 28 assertequal(i, 6, "break") 29 30 sum = 0 31 for i := 0; i <= 10; i++ { 32 sum = sum + i 33 } 34 assertequal(sum, 55, "all three") 35 36 sum = 0 37 for i := 0; i <= 10; { 38 sum = sum + i 39 i++ 40 } 41 assertequal(sum, 55, "only two") 42 43 sum = 0 44 for sum < 100 { 45 sum = sum + 9 46 } 47 assertequal(sum, 99 + 9, "only one") 48 49 sum = 0 50 for i := 0; i <= 10; i++ { 51 if i % 2 == 0 { 52 continue 53 } 54 sum = sum + i 55 } 56 assertequal(sum, 1+3+5+7+9, "continue") 57 58 } 59
