How to do profiling in c++

I've to measure the time taken by a c++ program to execute and also the number of clock cycles that were required to do so. Please help fast I've a deadline to meet.

Thanks in advance

Use the ctime library for clocks. The code below has not been compiled.

Code:

---

#include<iostream>
#include<ctime>

using namespace std;

int main()
{
    const float clk_strt = float( clock() );

    for(int i = 0; i < 100; i++ )
            cout<<i<<" ";

    const float clk_end = float ( clock() );

  cout<<"\n\nThe number of ticks is taken to execute is: " << (clk_strt - clk_end) << endl;

  return 0;

}

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If you're on Linux, you can compile using the -pg option to generate a gprof file.

Quote:

---

Originally Posted by binaryHex

Use the ctime library for clocks. The code below has not been compiled.

Code:

---

#include<iostream>
#include<ctime>

using namespace std;

int main()
{
    const float clk_strt = float( clock() );

    for(int i = 0; i < 100; i++ )
            cout<<i<<" ";

    const float clk_end = float ( clock() );

  cout<<"\n\nThe number of ticks is taken to execute is: " << (clk_strt - clk_end) << endl;

  return 0;

}

---

---

To get the ticks taken to execute you must use (clk_end - clk_strt) and not the opposite.

thanks guys for replying..... Am working on winxp operating system and I use turbo C++. This clock() function will give me the number of cpu clock cycles or the actual time taken to execute?..... And further when I tried compiling this program the compiler was unable to include the ctime library, I got the same error in Visual C++ as well....

It compiles well on code::blocks.

k.... I've also downloaded code::blocks......Can u tell me how to proceed further to run the program like which compiler to select etc etc..... Also if u kno a way to do all this in turbo c++ only then please tell.........

hey salehhamadeh pls reply dude

In old compilers (like Turbo C++), you probably have to use time.h instead of ctime

Code:

---

#include <time.h>

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thanks a lot philip..... It did work!!!!!![:D]

Any compiler which doesn't support the C++ standard libraries is too old to be using. Ditch it.

yeah u r right.... Mah college forces me 2 use it

If you're forced to use it, then learning c would be better.