Question

Using any programming language of your choice, write a program that will imitate the process of a language recognizer. Your program should be able to verify any specific conditions of C/Java/Assembly/SQL/C++ language. You will have to define the specific condition. Note: DO NOT use any available library to perform this process.

Answer 1

A simple language recognizer program in Python checks if a string is a valid C variable name by ensuring it starts with a letter or underscore and is followed by any combination of letters, numbers, and underscores.

Step-by-step explanation:

Language Recognizer Program

To create a basic language recognizer without using any existing libraries, consider a simple program in Python that checks if a given string is a valid variable name in the C programming language. A valid C variable name must start with a letter (either uppercase or lowercase) or an underscore, followed by any combination of letters, numbers, and underscores.

Here is a Python code example:

def is_valid_c_variable(name):
if not name:
return False
if not (name[0].isalpha() or name[0] == '_'):
return False
for char in name[1:]:
if not (char.isalnum() or char == '_'):
return False
return True

# Example usage:
variable_name = 'myVariable1'
print(is_valid_c_variable(variable_name))

The program defines a function is_valid_c_variable that takes a string and returns True if it's a valid C variable name and False otherwise. By running this program with different inputs, you can test whether or not a string is a valid C variable name.