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cmd/test.cpp

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+// C++ Code to demonstrate getppid() 
+#include <iostream> 
+#include <unistd.h> 
+using namespace std; 
+
+// Driver Code 
+int main() 
+{ 
+	int pid; 
+	pid = fork(); 
+	if (pid == 0) 
+	{ 
+		cout << "\nParent Process id : "
+			<< getpid() << endl; 
+		cout << "\nChild Process with parent id : "
+			<< getppid() << endl; 
+	} 
+	return 0; 
+}