a c compiler error

JackieChan

Guys, I'm trying to compile a simple enough c script on a HP UX box using gcc.
I'm receiving the following error
'incompatible implicit declaration of built-in function 'strlen' '

The line in question simply reads cnt1=strlen(argv[1]);
Any advice?
JC

Blinder

Have you included the correct h file?
#include <string.h>

daymobrew

Are you including strings.h? And what is argv declared as.
Post more code.
Useless sample of usage below:
[PHP]#include <strings.h>

int main(int argc, const char *argv[])
{
int cnt1;
if ( argc >= 2 ) /* Gotta ensure there is an argv[1] to check. */
cnt1 = strlen(argv[1]);

return 0;
}[/PHP]

JackieChan

Guys,
thanks for your help.
the problem was that string.h was not included.

JC