(Solved): 1. Write a \\( C \\) program to identify whether a given line is a comment or not. Hints: RESOURCE: ...

1. Write a \\( C \\) program to identify whether a given line is a comment or not. Hints: RESOURCE: Turbo \\( \\mathrm{C}++ \\) PROGRAM LOGIC: Read the input string. Check whether the string is starting with '/ and check next character is '\\% or'*'. If condition satisfies print comment. Else not a comment. PROCEDURE: Go to debug \\( > \\) run or press CTRL + F9 to run the program. INPUT \\& OUTPUT: Input: Enter comment: / hello Output: It is a comment Input: Enter comment: hello Output: It is not a comment 2. Write a \\( C \\) program to recognize strings under ' \\( a^{*},{ }^{\\prime} a^{*} \\mathbf{b}+{ }^{\\prime} \\), ' \\( a b b \\) ' Hints: RESOURCE: Turbo \\( \\mathrm{C}++3.3 \\) PROGRAM LOGIC: By using transition diagram we verify input of the state. If the state recognize the given pattern rule. Then print string is accepted under \\( a * / a * b+/ a b b \\).\r\n\r\n\r\n4. Write a \\( \\mathrm{C} \\) program to simulate lexical analyzer for validating operators. Hints: RESOURCE: Turbo \\( \\mathrm{C}++ \\) PROGRAM LOGIC: Read the given input. If the given input matches with any operator symbol. Then display in terms of words of the particular symbol. Else print not a operator. PROCEDURE: Go to debug \\( > \\) run or press CTRL + F9 to run the program. INPUT \\& OUTPUT: Input Enter any operator: * Output Multiplication\r\nElse print string not accepted. PROCEDURE: Go to debug \\( >> \\) run or press CTRL + F9 to run the program. INPUT \\& OUTPUT: Input : Enter a String: aaaabbbb Output: aaaabbbbb is accepted under rule ' \\( a \\) * \\( b+ \\) ' Enter a string: cdgs cdgs is not recognized 3. Write a \\( \\mathrm{C} \\) program to test whether a given identifier is valid or not. Hints: RESOURCE: Turbo \\( \\mathrm{C}++ \\) PROGRAM LOGIC: Read the given input string. Check the initial character of the string is numerical or any special character except \" then print it is not a valid identifier. Otherwise print it as valid identifier if remaining characters of string doesn't contains any special characters except \" PROCEDURE: Go to debug \\( >> \\) run or press CTRL + F9 to run the program. INPUT \\& OUTPUT: Input: Enter an identifier: first Output: Valid identifier Enter an identifier:1aqw Not a valid identifier