sscanf not reading user input into struct member-CodePudding

I'm attempting to read two pieces of data (an integer and a string) from user input, in one line, and store them into a struct.

code for struct:

// struct for message data
typedef struct message {
    int destPort;
    char messageData[100];
} message;

I've allocated memory for the struct like so:

message* newMsg = malloc(sizeof(message));

Obtaining user input:

fgets(userInput, 100, stdin);

I'm using sscanf like so:

if(sscanf(userInput, "%d[^ ] 0[^\n]", &newMsg->destPort, newMsg->messageData) != 2) {
                printf("Error: usage is <destination port #> <message>\n");
                exit(1);
            }

If user inputs "2002 hello", 2002 is read but hello isn't and therefore sscanf the if statement fails.

Any help would be greatly appreciated!

CodePudding user response：

Your scanf format specifier would match an input of "2002[^ ] hello".
The number matches the "%d" (or "%i"). The "[^ ]" would have to be literally there, because it is not one of the format specifers from those found in the documentation.
The sample input can be matched with "%d 0[^\n]", though that would require a char messageData[101];. Or match with "%d