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