bufPrint.md

const std = @import("std");
const fmt = std.fmt;
const debugPrint = std.debug.print;

pub fn main() !void {
    const src = "hogehgoehgoe";
    const ch = 'A';
    var dst = [_]u8{0} ** 0x20;

    _ = try fmt.bufPrint(&dst, "{s}{c}{s}", .{
        src[0..3],
        ch,
        src[3..src.len],
    });

    debugPrint("/{s}/\n", .{dst});
}

s0n1cd347h9 src $ ./bufPrint
/hogAehgoehgoe/

a