add src-space c/cpp

space/src-cpp/Makefile

@@ -0,0 +1,15 @@
+CC = g++
+
+SRC_DIR = ./src
+
+TARGET = main.cpp
+
+BUILD_DIR = ../../build
+
+OUTPUT = cpp.out
+
+build:
+	$(CC) -o $(BUILD_DIR)/$(OUTPUT) -O2 -Wall -lm --std=c++17 -fsanitize=address,leak,undefined $(SRC_DIR)/$(TARGET)
+
+run: build
+	$(BUILD_DIR)/$(OUTPUT)

space/src-cpp/src/main.cpp

@@ -0,0 +1,17 @@
+#include <iostream>
+
+int fib(int n) {
+    if (n == 0 || n == 1) {
+        return n;
+    }
+    return fib(n - 1) + fib(n - 2);
+}
+
+int main() {
+    int temp;
+    std::cin >> temp;
+
+    std::cout << fib(temp) << std::endl;
+
+    return 0;
+}