-5 
int i=0;
while(i<=100)
{
    printf("hello world....\n");
    i++;
}

For the above program, how can I find the total time of execution of while loop.

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  • 5
    The body of the loop is not executed. Commented Jun 16, 2017 at 5:42
  • 1
    For loop execution while( i <= 100 ). It's already been answered here: stackoverflow.com/questions/5248915/execution-time-of-c-program Commented Jun 16, 2017 at 5:42
  • 1
    Could have searched before asking the question. This has already been answered. Commented Jun 16, 2017 at 5:43
  • 2
    That will be executed really, really fast :-) You probably want to change while(i>=100) into while(i <= 100) Commented Jun 16, 2017 at 5:53
  • thank you frnds. i have searched before but i did'nt find may be I am lack of searching knowledge . anyway thanks. Commented Jun 16, 2017 at 5:57

1 Answer 1

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1

In header file time.h have that function. you can use that. You can see there is a clock_t variable called start which calls a clock() function. try this: 

clock_t start = clock();
for ( i = 0; i < 100; i++ )
            rand();
    printf ( "%f\n", ( (double)clock() - start ) / CLOCKS_PER_SEC );

it will give you execution time. for this check your conditioj in while loop. it should "< 100" i think. check this code it will work for you.

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4 Comments

loop will not execute i=0 and in while loop it says i>=100
i mentioned it in edit check this. its a running code.
great yeap now it works
now its working thanks

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