45 lines
1.4 KiB
Zig
45 lines
1.4 KiB
Zig
const std = @import("std");
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pub fn main() !void {
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const rand = std.crypto.random;
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const reader = std.io.getStdIn().reader();
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const writer = std.io.getStdOut().writer();
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try writer.print("Welcome to my number guessing game! \n", .{});
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try writer.print("Enter an upper limit\n", .{});
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const upperLimit = oneIntInput(writer, reader);
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try writer.print("Your upper limit is {d}! \n", .{upperLimit});
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for (0..10) |i| {
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const randomInt = rand.intRangeLessThan(u16, 0, 3);
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try writer.print("Random number {d}: {d} \n\n", .{i, randomInt});
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}
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}
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pub fn oneIntInput(writer: anytype, reader: anytype) !i64 {
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var buffer: [256]u8 = undefined;
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while (true) {
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try writer.print("> ", .{});
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const amountInputBytes = try reader.read(&buffer);
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const input_slice: []u8 = buffer[0..(amountInputBytes - 1)];
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const result: i64 = std.fmt.parseInt(i64, input_slice, 10) catch |err| {
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switch (err) {
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error.InvalidCharacter => {
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try writer.print("Error: Invalid character, try again! \n", .{});
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},
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error.Overflow => {
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try writer.print("Error: Too big for an i64, try again! \n", .{});
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},
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}
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try writer.print("\n", .{});
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continue;
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};
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return result;
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}
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}
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