How to find compilation/execution time in C?

vignesh1988i · 2010-01-08T22:40:11+00:00

how to find the compilation time or execution time in C??????? wat function we must use to find the operation time in milli seconds??????????? it's very urgent !!!!!!!!😔😔😔😔😔😔

How to find compilation/execution time in C?

vignesh1988i

Member

Updated: Oct 27, 2024

Views: 1.3K

how to find the compilation time or execution time in C??????? wat function we must use to find the operation time in milli seconds??????????? it's very urgent !!!!!!!!😔😔😔😔😔😔

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Manish Goyal

Member • Jan 8, 2010

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

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vignesh1988i

Member • Jan 9, 2010

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 😀

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Manish Goyal

Member • Jan 9, 2010

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

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vignesh1988i

Member • Jan 9, 2010

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

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ms_cs

Member • Jan 9, 2010

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..

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vignesh1988i

Member • Jan 9, 2010

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

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ms_cs

Member • Jan 9, 2010

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

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vignesh1988i

Member • Jan 9, 2010

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???????

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Manish Goyal

Member • Jan 9, 2010

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?

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ms_cs

Member • Jan 9, 2010

see this link,

#-Link-Snipped-#

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vignesh1988i

Member • Jan 9, 2010

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 😀 😀

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Manish Goyal

Member • Jan 9, 2010

Try this it may help you

#include<iostream.h>
#include<conio.h>
#include<time.h>

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<<d<<endl;
getch();
}

I have made small changes

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vignesh1988i

Member • Jan 9, 2010

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 😔

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