diff --git a/C/Spatial_albedos_algorithm (002).pdf b/C/Spatial_albedos_algorithm (002).pdf
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diff --git a/C/hello_world.cpp b/C/hello_world.cpp
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+++ b/C/hello_world.cpp
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+// Your First C++ Program
+
+#include <iostream>
+
+int main() {
+    std::cout << "Hello World!";
+    return 0;
+}