how do you execute test cases?

This is too general a question. A lot of things depend on the circumstance. In some cases scripts can be written to automate the testcases designed and the output can be logged and mapped against the requirements.

In some other cases, manual testing might be necessary. i.e., tester will inout the test cases and log the outputs.

In some other cases (To test Load, traffic etc) there are testing tools available through which test cases can be configured.

PS : It is good to see a new member posting the first post in the very right place Well sukanya, having a resonable post title also helps in getting a quick response. Instead of "Hi", you could've put the title as "Help needed in test case execution" or something like that It will fetch a far too quick a response.

__________________
[COLOR="Blue"][SIZE="2"]"If you are not living on the edge of your life, you are wasting space"[/SIZE][/COLOR]

Someone says "Impossible is nothing". The man next him says "Let me see you licking your elbow tip!"

u just have to see the difference between actual result and the expected results.
if there is any diffrence then u r executing your tests!
executing is not like switch on a button.
executing depednds on the test cases u have writtn>
just test the application or hardware anything which is under test .folloow the test description and compare the result u got with the expected ones. simple!!!

Thank you, true the question was not specific,now

I haveunderstanding and good experience on testing definitions,writing test cases,executing,test plan,test cases,documentation,

help needed in testing(qtp)plzzz