30 lines
326 B
Rust
30 lines
326 B
Rust
// xfail-stage0
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pred even(uint x) -> bool {
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if (x < 2u) {
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ret false;
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}
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else if (x == 2u) {
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ret true;
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}
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else {
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ret even(x - 2u);
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}
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}
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fn print_even(uint x) : even(x) {
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log x;
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}
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fn foo(uint x) -> () {
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if check(even(x)) {
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print_even(x);
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}
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else {
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fail;
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}
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}
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fn main() {
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foo(2u);
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}
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