data structures - Time complexity of c programs -


is there code in c analyse time taken program after giving inputs can find time complexity of program giving different inputs. error of 1 millisecond can't tolerated.i want exact time .

there functions calculate time in time.h

just use following example 

clock_t start = clock();  // job clock_t end = clock(); float seconds = (float)(end - start) / clocks_per_sec;

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