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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()
{
print a,b,c,d,e,f,g,h,i,"\n";
}
func
testit() bool
{
if a+b+c+d+e+f+g+h+i != 45 {
print "sum does not add to 45\n";
printit();
panic;
}
return 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() { 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() {
if z == 19 {
break;
}
print "on ", z, "th iteration\n";
printit();
panic;
}
}
if !testit() {
print "final val\n";
printit();
panic;
}
a, b = swap(1, 2);
if a != 2 || b != 1 {
panic "bad swap";
}
//BUG a, b = swap(swap(a, b));
// if a != 2 || b != 1 {
// panic "bad swap";
// }
}
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