Initial data commit

Task/String-case/Zig/string-case.zig

@@ -0,0 +1,16 @@
+const std = @import("std");
+
+pub fn main() !void {
+    const stdout_wr = std.io.getStdOut().writer();
+    const string = "alphaBETA";
+    var lower: [string.len]u8 = undefined;
+    var upper: [string.len]u8 = undefined;
+    for (string) |char, i| {
+        lower[i] = std.ascii.toLower(char);
+        upper[i] = std.ascii.toUpper(char);
+    }
+    try stdout_wr.print("lower: {s}\n", .{lower});
+    try stdout_wr.print("upper: {s}\n", .{upper});
+
+    // TODO use https://github.com/jecolon/zigstr
+}