c - How to use rand -- C99 version -

i writing c program , want use for :

for(int i=0 ; < ; i++ ) 

so need use c99 version in order initialize counter of inside " ( ) " c99 version doesn't work rand() function .

in fact on man page of rand() mentions : " function not part of c99 part of posix "

any ideas in order avoid initializing counter before for ..

//update

the output of compile :

warning: implicit declaration of function ‘rand_r’ [-wimplicit-function-declaration] 

code :

array[i] = rand_r(&seed) % max + min; 

• > array[i] type char* (i have dynamically allocated space it)

thanks

rand() much part of c99 standard, have make sure include correct header file.

#include <stdlib.h> int main(void) {     return rand() % 10; } 

the stdlib.h header file covered in 7.20 of c99 standard, , rand() covered in 7.20.2.

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if man page stating it's not part of c99, it's incorrect. mine (under debian jessie) states:

the functions rand() , srand() conform svr4, 4.3bsd, c89, c99, posix.1-2001.

but, of course, it's standard controlling document.

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you may misreading man page, or whoever wrote man page may confused. random() , srandom() functions not part of c99 (they're posix), rand() , srand() definitely are.

or may using rand_r, re-entrant version. posix not c99.

if want use gcc in c99 mode for (int = 0... functionality, still want able call non-c99 functions, compile -std=gnu99 rather -std=c99.