And cstdlib (C Standard Library) is used for rand & srand.
Note: Without changing any thing, I executed my program twice, and it gave me different Output, So we get completely Random Numbers in this way.
Time is changing.
srand(time(0)), seed is changing so outcome is changing (variety of random Numbers are being generated
still have confusion...plz help..
ReplyDeleteHave you done what is written on the note?
ReplyDeleteYou haven't read the post below this post, there won't be any problem then.
ReplyDeleteFeel free to ask, but deep thinking to know what is happening will solve your problem.
noi didnt have any concept abt random numbers cuz i bunked that class.....
ReplyDeleteHa ha ha,
ReplyDeleteNo problem:
You can't use rand without srand. Srand is a "seed value". As you sow so shall you reap. A group of random numbers are generated with each particular value of srand. Whenever we use a specific value in srand, a specific group of numbers will be generated, and that specific group of values (so called random) can be obtained whenever we use that number in srand which we used previously.
There is no chance of confusion now.
ReplyDeleteYou look frightened from Random Numbers
#include
ReplyDelete#include
#include
using namespace std;
void main()
{
int a[5][5];
for (int i=0;i<5;i++)
{
for(int j=0;j<5;j++)
{a[5][5]=rand();}
cout<< a[5][5]<<endl;
}
}
this program is compiled without using srand...nd i still didint got it....look is we use srand(5); in start and then cout rand using for loop then what srand really do in it...it gives a limit for number or what??
ReplyDeleteThis is the point, how the numbers generated by this program are random numbers, when they are same whenever we run our program?
ReplyDeleteThis is the function of srand to produce different numbers when different numbers are in its parameter.
I take my words back about that we can't use rand without srand.
ReplyDeleteI appreciate your counter example.
And we are not using srand(5) here.
ReplyDeleteno no am not taking abt this progrm that srand(5); means what...
ReplyDeleteam asking generally that what it really mean iff we use srand (5); in a progrm
It means that a set of predefined operations will be carried out at 5, and then a number will be generated (using rand).
ReplyDeleteUser can use this number. If called second time (using rand) again set of predefined operations will be performed to produce second number. These Operations are set in such a way to produce random number.
Got it...Thank you soo much...
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