add src-space/* and clear src files

space/src-cpp/src/main.cpp

@@ -1,17 +0,0 @@
-#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;
-}