Create a simple note

gistfile1.m

- (void) makeNoteWithTitle:(NSString*)noteTile withBody:(NSString*) noteBody withParentNotebook:(EDAMNotebook*)parentNotebook {
    NSString *noteContent = [NSString stringWithFormat:@"<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
                             "<!DOCTYPE en-note SYSTEM \"http://xml.evernote.com/pub/enml2.dtd\">"
                             "<en-note>"
                             "%@"
                             "</en-note>",noteBody];
    
    // Parent notebook is optional; if omitted, default notebook is used
    NSString* parentNotebookGUID;
    if(parentNotebook) {
        parentNotebookGUID = parentNotebook.guid;
    }
    
    // Create note object
    EDAMNote *ourNote = [[EDAMNote alloc] initWithGuid:nil title:noteTile content:noteContent contentHash:nil contentLength:noteContent.length created:0 updated:0 deleted:0 active:YES updateSequenceNum:0 notebookGuid:parentNotebookGUID tagGuids:nil resources:nil attributes:nil tagNames:nil];
    
    // Attempt to create note in Evernote account
    [[EvernoteNoteStore noteStore] createNote:ourNote success:^(EDAMNote *note) {
        // Log the created note object
        NSLog(@"Note created : %@",note);
    } failure:^(NSError *error) {
        // Something was wrong with the note data
        // See EDAMErrorCode enumeration for error code explanation
        // http://dev.evernote.com/documentation/reference/Errors.html#Enum_EDAMErrorCode
        NSLog(@"Error : %@",error);
    }];
}

This is linked from the documentation section on creating notes with attachments. It doesn't contain such details.