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what does the parameters mean in the main() function, and how to use this kind of command parameters?


int main(int argc, char * argv[])
{

char message[20];

if(argc<2)
{

By the way, can any body expain how to use realloc() function, and it is better to use a example.
Thanx for help!

By the way, can any body expain how to use realloc() function, and it is better to use a example.
Thanx for help!

if I say int a, *p;
a = 20; p = &a; and
*p == a ?

if I declare a int variable a, and a int *p, let p point to a, p = &a;
can I say *p == a; at the moment?

can I assign a consistant to a pointer varible? like
int *p;
*p = 13;
???
or can i use pointer like this:
int *p;
int e = 13;
*p == e;
thanks for your help!can I assign a consistant to a...