Add ExpenseReport in Zig.

README.md

@@ -60,6 +60,7 @@ The ExpenseReport example currently exists in the following languages:
 - [TypeScript](expensereport-typescript/)
 - [Visual BASIC](expensereport-vb/)
 - [XML/XSLT](expensereport-xslt/)
+- [Zig](expensereport-zig/)
 
 ## Planned languages
 (in no particular order and with no guarantee)

expensereport-zig/.gitignore

@@ -0,0 +1,2 @@
+ExpenseReport
+zig-cache/

expensereport-zig/ExpenseReport.zig

@@ -0,0 +1,48 @@
+const std = @import("std");
+const ExpenseType = enum { DINNER, BREAKFAST, CAR_RENTAL };
+const print = std.debug.print;
+
+const Expense = struct {
+    type: ExpenseType,
+    amount: u32,
+};
+
+fn printReport(expenses: []Expense) void {
+    var total: u32 = 0;
+    var meals: u32 = 0;
+
+    print("Expense Report: {s}\n", .{""});
+
+    for (expenses) |expense| {
+        if (expense.type == ExpenseType.DINNER or expense.type == ExpenseType.BREAKFAST) {
+            meals += expense.amount;
+        }
+
+        var name: []const u8 = "";
+        switch (expense.type) {
+            ExpenseType.DINNER => { name = "Dinner"; },
+            ExpenseType.BREAKFAST => { name = "Breakfast"; },
+            ExpenseType.CAR_RENTAL => { name = "Car Rental"; },
+        }
+
+        var mealOverExpensesMarker: []const u8 = if (expense.type == ExpenseType.DINNER and expense.amount > 5000 or expense.type == ExpenseType.BREAKFAST and expense.amount > 1000) "X" else " ";
+
+        print("{s}\t{d}\t{s}\n", .{name, expense.amount, mealOverExpensesMarker});
+
+        total += expense.amount;
+    }
+
+    print("Meal expenses: {d}\n", .{meals});
+    print("Total expenses: {d}\n", .{total});
+}
+
+pub fn main() void {
+    var expenses: [5]Expense = .{
+        Expense {.type = ExpenseType.DINNER, .amount = 5000},
+        Expense {.type = ExpenseType.DINNER, .amount = 5001},
+        Expense {.type = ExpenseType.BREAKFAST, .amount = 1000},
+        Expense {.type = ExpenseType.BREAKFAST, .amount = 1001},
+        Expense {.type = ExpenseType.CAR_RENTAL, .amount = 4},
+    };
+    printReport(&expenses);
+}

expensereport-zig/Makefile

@@ -0,0 +1,17 @@
+SHELL:=/bin/bash
+
+export PATH:=${HOME}/Software/zig-linux-x86_64-0.9.0/:${PATH}
+
+.PHONY: all
+all: run
+
+.PHONY: run
+run: ExpenseReport
+	./ExpenseReport
+
+%: %.zig
+	zig build-exe $^
+
+.PHONY: clean
+clean::
+	$(RM) *.[adios] ExpenseReport