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Exercise-9.1: Unit test of APIs
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* Based on below table create unit test functions for positive cases and negative cases

* Example : Positive cases

  * module_1_decl_4_test_1( ) --> char x[10] = "bangalore"; fun(x);
  * module_1_decl_4_test_2( ) --> char x[10] = "b"; fun(x);
  * module_1_decl_4_test_3( ) --> char x[10] = ""; fun(x);
  * module_1_decl_4_test_4( ) --> char x[10] = "\\0"; fun(x);
  * module_1_decl_4_test_5( ) --> char x[10] = "banga\\0lore"; fun(x);
  * module_1_decl_4_test_6( ) --> char x[10] = "\\0bangalore"; fun(x);

.. csv-table:: 
    :file: ./c_faqs_unit_testing.csv
    :widths: 2,50,50