Add proper checks for input format

[adityabisoi]

Add checks to ensure the input format is correct for each operation
Ex: infix input if entered in a postfix-infix transition, must give out an error.

[Gurdeep475]

I would like to work on this issue under GSSOC`22. Please assign it to me.

[Gurdeep475]

Thanks. I am working on it.

[Shweta597]

I would like to work on this issue under GSSOC'22. Please assign it to me.

[adityabisoi]

@Gurdeep475 Your status?

[Gurdeep475]

working on it.

[Gurdeep475]

@adityabisoi how should I give an error, like should I create an alert that displays an invalid expression message or simply throw the error?

[adityabisoi]

@adityabisoi how should I give an error, like should I create an alert that displays an invalid expression message or simply throw the error?

Show it to the user.

[adityabisoi]

@Gurdeep475 Updates on this issue?

[Gurdeep475]

@adityabisoi yes, most of the work is done, just working on one remaining algo.

[Gurdeep475]

@adityabisoi need some guidance here, I have got the algorithms for validating prefix notation but am not able to get the same for infix and postfix ones.

[SonakshiGoyal]

I would like to work on this issue under GSSOC`22. Please assign it to me.

[adityabisoi]

@Gurdeep475 https://stackoverflow.com/questions/39823568/how-can-i-check-whether-the-given-expression-is-an-infix-expression-postfix-exp

[adityabisoi]

@SonakshiGoyal I shall assign this issue to you if @Gurdeep475 doesn't make a PR until tomorrow.

[adityabisoi]

This issue is now open to contributions.

[LakshayN]

@adityabisoi I would like to work on this issue in GSSOC'22.