enum type usage

[hta1984]

In my homework i need to use enum type input,and these inputs will contain a port number and a description.

Here is the input:
HTTP : 80 “Hypertext Transfer Protocol”
SSH : 22 “Secure Shell”
SMTP : 25 “Simple Mail Transfer Protocol”
DNS : 53 “Domain Name System”
TELNET : 23 “Telecommunication Network”
IMAP : 143 “Internet Message Access Protocol”

i've written 2 structs below:
typedef enum{
HTTP = 80;
SSH = 22;
SMTP = 25;
DNS = 53;
TELNET = 23;
IMAP = 143;
}port_numbers;

typedef struct{
enum port_numbers number;
string definition;
}Ports;

i have difficulties with assinging definitions to port numbers.how can i match each port number and definiton?i'm going to print them to a file when e.g: HTTP word is passed as an enum type parameter to a function i define

Thanks in advance

[Banfa]

i've written 2 structs below:
typedef enum{
HTTP = 80;
SSH = 22;
SMTP = 25;
DNS = 53;
TELNET = 23;
IMAP = 143;
}port_numbers;

This is not a structure it is an enum and the 2 things are completely different. Also you have the syntax wrong it should be

typedef enum{
    HTTP = 80,
    SSH = 22,
    SMTP = 25,
    DNS = 53,
    TELNET = 23,
    IMAP = 143
}port_numbers;
 

[tyreld]

Can you show us more code? Have you actually written the function that assigns the port numbers? You haven't given enough info for us to know what the exact problem you are having is.

One thing I have noticed is that you are using the enum identifier in your struct definition when you typedefed the enum definition to a standalone name. There is no type "enum port_numbers", but there is a type "port_numbers" that is a enum. Take a luck at my modified code. There is a type "port_numbers" of type "enum e_port_numbers" and a type "Ports" of type "struct s_Ports". The typedef keyword can have subtle implications since both struct and enum have optional names.

typedef enum e_port_numbers {
   HTTP = 80,
   SSH = 22,           // use commas not semi-colons here
   SMTP = 25,
   DNS = 53,
   TELNET = 23,
   IMAP = 143
} port_numbers;
 
typedef struct s_Ports {
   port_numbers number;   // noticed I've changed this line
 
   enum e_port_numbers number2;  // and added an example of using the
                              // non-typedefed type name
   string definition;
} Ports;
 
 

[hta1984]

when HTTP is passed as an enum type argument to a function i want to print its port number and description.
function(...,HTTP,...){
cout << HTTP << port number of HTTP << description of HTTP << endl;
}

i hope i could explain what i need