How to find compilation/execution time in C?

Replies

• 

  Manish Goyal

  Re: A urgent help needed!!!!!! plzzzzz
  
  Hello vignnesh there is no need of any function to know the run time
  just do what i say?
  In c++ program window
  just write any program and execute it
  after getting output click on option 'compile' in menu bar...then click 'information'
  a window will open in which run time of program will be mentioned
  ''Don't confuse with c++ program window by which i mean blue screen''there you can execute both c++ and c program
• 

  vignesh1988i

  YA THANKS allot for ur fast reply 😀 😀 , but actually wat i need is the processor time .... but here its taking the whole run time (ie) as soon as the exe window opens to till it returns to the program screen or to editor.......
  BUT I NEED THE PROCESSOR TIME , so can u help for that 😀
• 

  Manish Goyal

  Sorry vignesh..your question confuse me..
  Is there any difference between processor time and run time?
  sorry if my question is silly?
• 

  vignesh1988i

  ok ok ok 😀 here i ll explain u with a neat example .......
  
  let us take the code :
  
  main()
  {
  int n;
  clrscr();
  printf("enter the number :");
  scanf("%d",&n); Input session
  
  if(n>0) line 6
  printf("%d is +ve",n);
  else if(n<0)
  printf("%d is -ve",n);
  else
  printf(" 0 value "); line 11
  
  getch();
  }
  
  here i need to calculate the execution time from line 6 to line 11 alone in milliseconds 😀 , because that one is the processing time where i do manipuations or operations na , 😀
  
  But in the option "COMPILE" , the "INFORMATION" option is giving the total time in milliseconds , which is including the input time to till coming back to the editor mode 😀 😀 that's why iam asking 😀 sorry 😔
  
  thank u
• 

  ms_cs

  vignesh1988i

  ok ok ok 😀 here i ll explain u with a neat example .......
  
  let us take the code :
  
  main()
  {
  int n;
  clrscr();
  printf("enter the number :");
  scanf("%d",&n); Input session
  
  if(n>0) line 6
  printf("%d is +ve",n);
  else if(n<0)
  printf("%d is -ve",n);
  else
  printf(" 0 value "); line 11
  
  getch();
  }
  
  here i need to calculate the execution time from line 6 to line 11 alone in milliseconds 😀 , because that one is the processing time where i do manipuations or operations na , 😀
  
  But in the option "COMPILE" , the "INFORMATION" option is giving the total time in milliseconds , which is including the input time to till coming back to the editor mode 😀 😀 that's why iam asking 😀 sorry 😔
  
  thank u

  
  Hey Dude ,
  
  Sure you can calculate,
  
  You can do this with the help of time.h header file,
  if still you have problem let me know..
• 

  vignesh1988i

  i have tried that 😀 , but pl. let me know about ur view , which function we must use to get the process time in milliseconds 😀 , pl. reply me immediately 😀
  
  thank u
• 

  ms_cs

  What is the problem you faced with that? post what you tried, here
• 

  vignesh1988i

  In time.h , there is a structure called time_t as u know it......
  i calculated the start time by giving :
  
  main()
  {
  int n;
  time_t t1 , t2;
  clrscr();
  scanf("%d",&n);
  time(&t1);
  //starting of the process
  if(n%2==0)
  printf("even")
  else
  printf("odd");
  // end of the process
  time(&t2);
  
  printf("\n%d",difftime(t2,t1));
  getch();
  }
  
  this only i gave , but am getting the answer in SEC. but i need the correct milliseconds time for the above code........ (ie) only the process time..... 😀 😀 can u understand???????
• 

  Manish Goyal

  I don't know about this..but why don't you create a function that will convert seconds into milliseconds...may be you will get what you want?
• 

  ms_cs

  see this link,
  
  #-Link-Snipped-#
• 

  vignesh1988i

  actually i know the conversion,,, the problem is that i cant able to see the small difference when i get the o/p in seconds.........
  
  for example :
  for checking a given number is even or odd : we will check with the if - else construct.....
  
  if( i%2==0) // this is the process for me.... i need to find out this time in milliseconds
  
  if i check for a number whether it is +ve or -ve ,
  
  if( a>0) // process
  
  else if(a<0) // process
  
  
  this time in milli seconds i need to find 😀 😀
  
  
  hope u can understand my question now fully 😀 😀
  
  
  can u give a solution for me 😀 😀
• 

  Manish Goyal

  Try this it may help you
  

  #include
  #include
  #include
  
  void main()
  {
  int n;
  time_t t1 , t2;
  clrscr();
  cin>>n;
  time(&t1);
  //starting of the process
  if(n%2==0)
  cout<<"even";
  else
  cout<<"odd";
  // end of the process
  double d; 
  d=difftime(t2,t1);
  cout<I have made small changes
                                      

• 

  vignesh1988i

  HMMMM 😀 😀 i have tried that , i too converted into milliseconds too... but i can't able to see small changes or difference in time , since i need a precised value in the difference in timings only i asked u for a solution 😀 😀 , sorry for troubling 😔