Passing array of characters help

[erictran]

GDay everyone,

I have a problem that I spent so much time on it.

How can I fix my code(below) to output the buffer msg_cat in function A from function B ?

Please help if you're interested in.

I'd appreciate it.

void A(){
char *msg;
char msg_cat[100] = "";	

                //Receive multicasted messages from server and store in msg buffer.
		msg = (char *)recvfromDST (&read_EP, sockMulti);	

		//Concatenate message msg into buffer msg_cat.
		strcat(msg_cat, msg);
		strcat(msg_cat, "\n");	
}

void B(){
                if (strncmp(KB_buff, "display", 7) == 0){	
		//output to screen here
                }
}

[Tonto]

void A()
{
		char *msg;
		char msg_cat[100] = "";	

                //Receive multicasted messages from server and store in msg buffer.
		msg = (char *)recvfromDST (&read_EP, sockMulti);	

		//Concatenate message msg into buffer msg_cat.
		strcat(msg_cat, msg);
		strcat(msg_cat, "\n");	

    		printf("%s", msg_cat);
		B(msg_cat);
}

void B(char * KB_buff)
{
                if (strncmp(KB_buff, "display", 7) == 0)
		{	
				//output to screen here		
				printf("%s", KB_buff);
                }
}

[dwks]

		strcat(msg_cat, msg);
		strcat(msg_cat, "\n");

You might want to consider sprintf(), especially if you plan to add more strcat()s.