calculating execution time in c++

Question

I have written a c++ program , I want to know how to calculate the time taken for execution so I won\'t exceed the time limit.

#include

usin         


        

Answer 1

OVERVIEW

I have written a simple semantic hack for this using @AshutoshMehraresponse. You code looks really readable this way!

MACRO

#include 

#ifndef SYSOUT_F
#define SYSOUT_F(f, ...)      _RPT1( 0, f, __VA_ARGS__ ) // For Visual studio
#endif

#ifndef speedtest__             
#define speedtest__(data)   for (long blockTime = NULL; (blockTime == NULL ? (blockTime = clock()) != NULL : false); SYSOUT_F(data "%.9fs", (double) (clock() - blockTime) / CLOCKS_PER_SEC))
#endif

USAGE

speedtest__("Block Speed: ")
{
    // The code goes here
}

OUTPUT

Block Speed: 0.127000000s