adding content

Start_Linux/timer.h

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+#ifndef TIMER_H
+#define TIMER_H
+
+// Usage of time.h: clock() returns the number of clock ticks since program start. CLOCKS_PER_SECONDS represents the
+// number of clock ticks per second.
+
+// Starts the timer.
+void startTimer();
+
+// Returns the time in seconds since startTimer() was called.
+double stopTimer();
+
+#endif