How to use function srand with time h

Question

My program contains code that should generate a random positive integer number every time I execute it  It generates random numbers but only once  After that  when I execute same code  it gives me same values  and it is making my code useless   I started with the rand function  and then I used the srand   function with the time h header file  but still it is not working properly    define size 10 for i 0 i lt size i        Arr i    rand   size    First call  random    6 0 2 0 6 7 5 5 8 6   Second call  random but same as previous    6 0 2 0 6 7 5 5 8 6     Later I visited Stack Overflow questions and I read about the srand   function  and I used it as    include lt time h gt  for i 0 i lt size i        Arr i    srand time NULL      First call   -10327 -10327 -10327 -10327 -10327 -10327 -10327 -10327 -10327 -10327   Second call   -10326 -10326 -10326 -10326 -10326 -10326 -10326 -10326 -10326 -10326   It is giving me different  but not random values   I ve defined Arr i  as unsigned int  and still I am getting negative values

User · Answer

Try to call randomize   before rand   to initialize random generator    look at  srand       why call it only once

User · Answer

include stdio h   rmv coding for randam number access   include conio h    include time h   void main         time t t      int rmvivek       srand time  amp t        rmvivek 1       while rmvivek lt  5                printf   c t  rand   10           rmvivek              getch

User · Answer

You need to call srand   once  to randomize the seed  and then call rand   in your loop    include  lt stdlib h gt   include  lt time h gt    define size 10  srand time NULL       randomize seed  for i 0 i lt size i        Arr i    rand   size

User · Answer

If you chose to srand  it is a good idea to then call rand   at least once before you use it  because it is a kind of horrible primitive psuedo-random generator  See Stack Overflow question Why does rand     7 always return 0    srand time NULL    rand      Now use rand     If available  either random or arc4rand would be better

User · Answer

include stdio h   include conio h   include time h   void main       time t t    int i    srand time  amp t       for i 1 i lt  10 i        printf   c t  rand   10     getch

[c] How to use function srand() with time.h?

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