Replace Makefile with build.zig

.gitignore

@@ -1,2 +1,3 @@
 main
 build/
+zig-cache

build.zig

@@ -0,0 +1,22 @@
+const Builder = @import("std").build.Builder;
+
+pub fn build(b: &Builder) {
+    const exe = b.addCExecutable("main");
+    exe.addCompileFlags([][]const u8 {
+        "-std=c99"
+    });
+
+    const source_files = [][]const u8 {
+        "compute.c",
+        "compute_helper.c",
+        "display.c",
+        "main.c"
+    };
+
+    for (source_files) |source| {
+        exe.addSourceFile(source);
+    }
+
+    exe.setOutputPath("./main");
+    b.default_step.dependOn(&exe.step);
+}