mirror of
https://github.com/golang/go
synced 2024-11-22 21:10:03 -07:00
83 lines
1.1 KiB
Go
83 lines
1.1 KiB
Go
// $G $F.go && $L $F.$A && ./$A.out
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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var a,b,c,d,e,f,g,h,i int;
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func
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printit()
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{
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println(a,b,c,d,e,f,g,h,i);
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}
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func
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testit(permuteok bool) bool
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{
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if a+b+c+d+e+f+g+h+i != 45 {
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print("sum does not add to 45\n");
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printit();
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return false;
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}
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return permuteok ||
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a == 1 &&
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b == 2 &&
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c == 3 &&
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d == 4 &&
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e == 5 &&
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f == 6 &&
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g == 7 &&
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h == 8 &&
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i == 9;
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}
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func
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swap(x, y int) (u, v int) {
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return y, x
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}
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func
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main()
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{
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a = 1;
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b = 2;
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c = 3;
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d = 4;
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e = 5;
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f = 6;
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g = 7;
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h = 8;
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i = 9;
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if !testit(false) { panic("init val\n"); }
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for z:=0; z<100; z++ {
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a,b,c,d, e,f,g,h,i = b,c,d,a, i,e,f,g,h;
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if !testit(z%20 != 19) {
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print("on ", z, "th iteration\n");
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printit();
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panic();
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}
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}
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if !testit(false) {
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print("final val\n");
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printit();
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panic();
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}
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a, b = swap(1, 2);
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if a != 2 || b != 1 {
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panic("bad swap");
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}
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a, b = swap(swap(a, b));
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if a != 2 || b != 1 {
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panic("bad swap");
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}
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}
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