publish multiple data on one topic

edit

Hello,

Is it possible to publish multiple data i.e angle for servo1 and angle for servo2 on one topic ? If yes, please show me answer how to do it.

Thanks in advance.

Edit: Thank you sir for your answer.

But still getting the error as "Segmentation fault(core dumped)"

Please consider my procedure:

sensor_msgs::JointState joint;
joint.position[1] = 50;
joint.velocity[1] = 100;
joint.effort[1] = 90;

dd.publish(joint);

qDebug() << "position =" << joint.position[1];
qDebug() << "velocity =" << joint.velocity[1];
qDebug() << "effort =" << joint.effort[1];