test fixes

examples/test_code/Example.java

@@ -0,0 +1,16 @@
+public class Example {
+    private String name;
+    
+    public Example(String name) {
+        this.name = name;
+    }
+    
+    public void greet() {
+        System.out.println("Hello, " + name);
+    }
+    
+    public static void main(String[] args) {
+        Example example = new Example("Java");
+        example.greet();
+    }
+}

examples/test_code/example.c

@@ -0,0 +1,16 @@
+#include <stdio.h>
+
+void greet(const char* name) {
+    printf("Hello, %s!\n", name);
+}
+
+int add(int a, int b) {
+    return a + b;
+}
+
+int main() {
+    greet("C");
+    int result = add(5, 3);
+    printf("5 + 3 = %d\n", result);
+    return 0;
+}

examples/test_code/example.cpp

@@ -0,0 +1,21 @@
+#include <iostream>
+#include <string>
+
+class Person {
+private:
+    std::string name;
+    int age;
+    
+public:
+    Person(const std::string& name, int age) : name(name), age(age) {}
+    
+    void greet() {
+        std::cout << "Hello, I'm " << name << " and I'm " << age << " years old." << std::endl;
+    }
+};
+
+int main() {
+    Person person("Alice", 30);
+    person.greet();
+    return 0;
+}

examples/test_code/example.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+func main() {
+    fmt.Println("Hello, World!")
+    greet("Go")
+}
+
+func greet(name string) {
+    fmt.Printf("Hello, %s!\n", name)
+}