Explain typename function in QTP.

Typename function is useful when you want to know the data type of the variable.

Vb script is a scripting language used in QTP. All variables used in QTP are by default variant.
When we assign a value to variable, its data type changes.

For example -
print typename(a)  'Empty

a=10
print typename(a)  ' Integer

a=10.2
print typename(a) 'Double

a="sagar"
print typename(a)  'String

a=null
print typename(a) 'Null

This is how we can use the typename function in QTP to find the current data type of the variable.

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