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 of many forms. 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
