A simple template for viewing the function run time of C language

1 /*2 clock (): The amount of time that is spent capturing from the moment the program starts running to clock () is called, the time unit3 is clock tick, that is: "clocking". 4  5 constant CLK_TCK: The number of clock ticks per second that the machine clock has taken. 6  */7 8#include <stdio.h>9#include <time.h>Ten  One clock_t start, stop; A  //clock_t is the variable type returned by the clock () function -  Doubleduration; -  //record the elapsed time of the measured function in seconds the  -  intMain () -  { -      //preparations not within the scope of the test are written before the Colck () call +Start =clock (); - my_function (); +Stop =clock (); A      //The other is not behind the processing of the test scope, such as the following output statement atDuration = ((Double) (Stop-start))/Clk_tck; -  -      return 0; -  -}

A simple template for viewing the function run time of C language