Add ex079 quoted identifiers

exercises/079_quoted_identifiers.zig

@@ -0,0 +1,30 @@
+//
+// Sometimes you need to create an identifier that will not, for
+// whatever reason, play by the naming rules:
+//
+//     const 55_cows: i32 = 55; // ILLEGAL: starts with a number
+//     const isn't true: bool = false; // ILLEGAL: what even?!
+//
+// If you try to create either of these under normal
+// circumstances, a special Program Identifier Syntax Security
+// Team (PISST) will come to your house and take you away.
+//
+// Thankfully, Zig has a way to sneak these wacky identifiers
+// past the authorities: the @"" identifier quoting syntax.
+//
+//     @"foo"
+//     
+// Please help us safely smuggle these fugitive identifiers into
+// our program:
+//
+const print = @import("std").debug.print;
+
+pub fn main() void {
+    const 55_cows: i32 = 55;
+    const isn't true: bool = false;
+    
+    print("Sweet freedom: {}, {}.\n", .{
+        55_cows,
+        isn't true,
+    });
+}