Code error in section 12.1.1, comptime_arg_runtime_error.zig

[suraj083]

In the file ZigExamples/comptime/comptime_arg_runtime_error.zig, there is an error in line 17. If we look at lines 15-20

var buffer: [5]u8 = .{ 0, 0, 0, 0, 0 };
_ = try stdout.write("Please write a 4-digit integer number\n");
_ = try stdin.takeDelimiterExclusive('\n');

try stdout.print("Input: {s}", .{buffer});
const n: u32 = try std.fmt.parseInt(u32, buffer[0 .. buffer.len - 1], 10);

Here, "buffer" is defined on line 15 and it's referenced again in lines 19 and 20 but it is never updated to store the user input.

So, as we can expect when I run the file with "zig run", I get the following error message:

comptime-function-args.zig:15:9: error: local variable is never mutated

[pedropark99]

Which version of the Zig compiler you are using?

[suraj083]

I'm using a recent development version: 0.16.0-dev.2565+684032671

My confusion is based more around the fact that while stdin was defined using stdin_reader which itself took a &stdin_buffer as an argument, the contents of stdin were never copied or moved into the buffer array defined on line 15.