Sane way of dynamically allocating arrays beyond declaration.
Hello all. Essentially what I need to do is what is described in the topic, in the context of using winsock's recv() function.
I've made some code that does what recv() does to strings so that I could find a solution without dealing with the rest of the socket code. Like recv(), recb() takes as its arguments a buffer array to store a string of chars and the length of that array.
#include <stdio.h>
#include <string.h>
int main(int argc, char *argv[])
{
char mystring[500]; // buffer with pseudo-unlimited capacity.
char *realbuf; // actual buffer, trimmed of un-needed space
int i;
recb(mystring, 500);
// trim & store
for (i=0; mystring[i] != '\0'; ++i){
realbuf[i]=mystring[i];
}
realbuf[i]='\0'; // add null to avoid garbage characters
printf("String: %s, Length: %d", realbuf, i); // print
return 0;
}
int recb (char *buffer, int bufn) {
int i;
char *towrite="What's up earth."; // in recv() this'd be data received from client/server
for (i=0; i <= bufn; i++) {
buffer[i]=towrite[i];
}
return i-1; // recv() returns how many bytes it stored
}
Okay, so this might work fine. But it's kind of long and redundant. Is there a sane way of doing it?
