f1d338194e
* Introduce the concept of packages. Closes #3 * Add support for error notes. * Introduce `@import` and `@c_import` builtin functions and remove the `import` and `c_import` top level declarations. * Introduce the `use` top level declaration. * Add `--check-unused` parameter to perform semantic analysis and codegen on all top level declarations, not just exported ones and ones referenced by exported ones. * Delete the root export node and add `--library` argument.
40 lines
1.1 KiB
Zig
40 lines
1.1 KiB
Zig
const std = @import("std");
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const io = std.io;
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const Rand = std.Rand;
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const os = std.os;
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pub fn main(args: [][]u8) -> %void {
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%%io.stdout.printf("Welcome to the Guess Number Game in Zig.\n");
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var seed : u32 = undefined;
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const seed_bytes = (&u8)(&seed)[0...4];
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%%os.get_random_bytes(seed_bytes);
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var rand = Rand.init(seed);
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const answer = rand.range_u64(0, 100) + 1;
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while (true) {
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%%io.stdout.printf("\nGuess a number between 1 and 100: ");
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var line_buf : [20]u8 = undefined;
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const line_len = io.stdin.read(line_buf) %% |err| {
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%%io.stdout.printf("Unable to read from stdin.\n");
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return err;
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};
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const guess = io.parse_u64(line_buf[0...line_len - 1], 10) %% {
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%%io.stdout.printf("Invalid number.\n");
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continue;
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};
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if (guess > answer) {
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%%io.stdout.printf("Guess lower.\n");
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} else if (guess < answer) {
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%%io.stdout.printf("Guess higher.\n");
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} else {
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%%io.stdout.printf("You win!\n");
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return;
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}
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}
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}
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