Added code for for and while loops

For-Loops/build.zig

@@ -0,0 +1,34 @@
+const std = @import("std");
+
+pub fn build(b: *std.build.Builder) void {
+    // Standard target options allows the person running `zig build` to choose
+    // what target to build for. Here we do not override the defaults, which
+    // means any target is allowed, and the default is native. Other options
+    // for restricting supported target set are available.
+    const target = b.standardTargetOptions(.{});
+
+    // Standard release options allow the person running `zig build` to select
+    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
+    const mode = b.standardReleaseOptions();
+
+    const exe = b.addExecutable("For-Loops", "src/main.zig");
+    exe.setTarget(target);
+    exe.setBuildMode(mode);
+    exe.install();
+
+    const run_cmd = exe.run();
+    run_cmd.step.dependOn(b.getInstallStep());
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+
+    const exe_tests = b.addTest("src/main.zig");
+    exe_tests.setTarget(target);
+    exe_tests.setBuildMode(mode);
+
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&exe_tests.step);
+}

For-Loops/src/main.zig

@@ -0,0 +1,15 @@
+const std = @import("std");
+
+pub fn main() anyerror!void {
+    const array = [_]u8{ 1, 2, 3, 4, 5 };
+
+    for (array) |item, index| {
+        std.debug.print("Item[{}] = {}\n", .{ index, item });
+    }
+    for (array[0..3]) |item, index| {
+        std.debug.print("Item[{}] = {}\n", .{ index, item });
+    }
+    for (array[0..3]) |_, index| {
+        std.debug.print("Item[{}]\n", .{index});
+    }
+}

While-loops/build.zig

@@ -0,0 +1,34 @@
+const std = @import("std");
+
+pub fn build(b: *std.build.Builder) void {
+    // Standard target options allows the person running `zig build` to choose
+    // what target to build for. Here we do not override the defaults, which
+    // means any target is allowed, and the default is native. Other options
+    // for restricting supported target set are available.
+    const target = b.standardTargetOptions(.{});
+
+    // Standard release options allow the person running `zig build` to select
+    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
+    const mode = b.standardReleaseOptions();
+
+    const exe = b.addExecutable("While-loops", "src/main.zig");
+    exe.setTarget(target);
+    exe.setBuildMode(mode);
+    exe.install();
+
+    const run_cmd = exe.run();
+    run_cmd.step.dependOn(b.getInstallStep());
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+
+    const exe_tests = b.addTest("src/main.zig");
+    exe_tests.setTarget(target);
+    exe_tests.setBuildMode(mode);
+
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&exe_tests.step);
+}

While-loops/src/main.zig

@@ -0,0 +1,40 @@
+const std = @import("std");
+
+pub fn main() anyerror!void {
+    var number: i32 = 0;
+    while (number < 10) : ({
+        number += 1;
+    }) {
+        std.log.info("Number is now: {}", .{number});
+    }
+
+    while (false) {
+        std.log.info("Number is now: {}", .{number});
+    } else {
+        std.log.info("Else block evaluated!", .{});
+    }
+
+    var condition = true;
+    while (condition) : (condition = false) {
+        std.log.info("Condition is true", .{});
+    } else {
+        std.log.info("Else block evaluated!", .{});
+    }
+
+    //var optional_value: ?i32 = null;
+    while (generateNumber()) |value| {
+        std.log.info("Generated: {}", .{value});
+    } else {
+        std.log.info("No more values!", .{});
+    }
+}
+
+var number2: i32 = 0;
+
+fn generateNumber() ?i32 {
+    if (number2 < 10) {
+        number2 += 1;
+        return number2 - 1;
+    }
+    return null;
+}