Method are not declared

[SuchtyTV]

Hey,

my compilers cries about the following code:

#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdio.h>
#include<string.h>




int main(int argc,char **argv)
{
    int sockfd,n;
    char sendline[100];
    char recvline[100];
    struct sockaddr_in servaddr;
    
    
    sockfd=socket(AF_INET,SOCK_STREAM,0);
    bzero(&servaddr,sizeof servaddr);
    
    servaddr.sin_family=AF_INET;
    servaddr.sin_port=htons(22000);
    
    inet_pton(AF_INET,"127.0.0.1",&(servaddr.sin_addr));
    
    connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr));
    
    while(1)
    {
        bzero( sendline, 100);
        bzero( recvline, 100);
        fgets(sendline,100,stdin); /*stdin = 0 , for standard input */
        
        write(sockfd,sendline,strlen(sendline)+1);
        read(sockfd,recvline,100);
        printf("%s",recvline);
    }
    
}

The methods write(),read(),inet_pton(): Implicit declaration of function 'inet_pton' is invalid in C99

So i try to declare them (but wondered, because they should be declared?). Either I got the signature wrong or he does not care about the declaration...

[flp1969]

inet_pton(), declared in arpa/inet.h;
read() and write(), declared in unistd.h;

Assuming you are using Linux, if your distro has the manpages-dev package, install it and use man...

[SuchtyTV]

No I actually use MacOS. Thing is it works with eclipse, but not with Xcode (Did not know this when I created the post).
Can I update C99 to C11 in xCode?