How can I know the what input i have to give?

Question

In program i am not able to understand the input of it

Answer 1

Suresh Vadthyavath in code playground you have to accept all the inputs before execution of code like :
click run
1st input + enter
2nd input + enter
...
Final input Submit

https://www.sololearn.com/learn/C/2914

Answer 2

If you don't know how to input then Daljeet Singh explained it well
If you just want to know wether that input is working right or not then you can always print it right after inputing it