Hi every body;
I want to generate random variable ( N numbers), with display the time of generating of each one.
for exemple:
the generated numbers the moment of generating it (second)
12 0.000000
200 0.000250
158 0.000800
365 0.00125
thank you fo help
what have you done so far
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i have used this code
But i have a doubt in the used clock functionCode:#include <stdio.h> #include <stdlib.h> #include <time.h> int i=0; int t1[100]; clock_t temps1[100]; void main() { int i = 0; for(i=0; i<90; i++){ t1[i]=rand()%250; temps1[i]=clock(); // printf("%d\t%f\n",t1[i],(double) temps1[i]/CLOCKS_PER_SEC); }
Well in a tight loop, all your clock() values are going to be the same.
Perhaps you need some real gaps in time.
Pick a small number of iterations to test with.Code:for(i=0; i<5; i++){ t1[i]=rand()%250; temps1[i]=clock(); sleep( rand()%3+1 ); }
A full 100 iterations could take up to 5 minutes with this code.
Oh, and main returns int, not void.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
Using srand() might help too.
thank you for replying
the solution of using sleep function is the more approriate for me
You'll get the same values every time unless you put a call to srand before the loop.
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Considering the printf, is this supposed to be C or C++?
Also, you should consider fixing main and getting rid of global variables.
Originally Posted by Adak
