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Difference between TSL & C language ?

TSL is automatically generated when an application is recorded and actions are performed, like in the case of Winrunner, Silk test, QTP... or any automated tool. It is closer to a VB Script.

The scripts in C language contains defined variables in the beginning, all kinds of loops, strings (if applicable) and largely depends of declaration of statements, parenthesis etc.
TSL-- Test script language this is the language used in winrunner for developing scripts. It's just like C language.

C was designed for implementing system software, it is also widely used for developing application software.
TSL is the scripting language which is auto generated in Win runner, it is similar to C language, but C is the Structural programing language where as C is the Scripting language, Non- structural programing language.


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Objective-C is a reflective, object-oriented programming language that adds Smalltalk-style messaging to the C programming language.

Today, it is used primarily on Apple's Mac OS X and iOS: two environments based on the OpenStep standard, though not compliant with it.[1] Objective-C is the primary language used for Apple's Cocoa API, and it was originally the main language on NeXT's NeXTSTEP OS. Generic Objective-C programs that do not use these libraries can also be compiled for any system supported by gcc or Clang.
C is a programming language, which is used to developed applications.
TSL is nothing but it is a scripting language introduced by Mercury Interactive for test automation. It is used in WinRunner. It has syntax more similar to C.