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Question-1. What is SNOBOL?
Answer-1: SNOBOL (String Oriented Symbolic Language) is a programming language focused on text and string manipulation.
Question-2. Who developed SNOBOL?
Answer-2: SNOBOL was developed by Ralph Griswold, Ivan Polonsky, and David Farber at Bell Labs in the 1960s.
Question-3. When was SNOBOL first released?
Answer-3: SNOBOL was first released in 1962.
Question-4. What was the primary purpose of SNOBOL?
Answer-4: SNOBOL was designed for text processing and string manipulation tasks.
Question-5. What are the key features of SNOBOL?
Answer-5: Key features include pattern matching, string processing, and dynamic typing.
Question-6. What does SNOBOL stand for?
Answer-6: SNOBOL stands for "String Oriented Symbolic Language."
Question-7. How does SNOBOL handle pattern matching?
Answer-7: SNOBOL uses built-in pattern matching capabilities with operators like POS and ANY.
Question-8. Is SNOBOL a compiled or interpreted language?
Answer-8: SNOBOL is an interpreted language.
Question-9. What type of programming paradigm does SNOBOL follow?
Answer-9: SNOBOL is primarily a procedural and symbolic language.
Question-10. What are the data types available in SNOBOL?
Answer-10: SNOBOL supports strings, integers, real numbers, and user-defined data types.
Question-11. What is the significance of strings in SNOBOL?
Answer-11: Strings are the primary focus of SNOBOL, making it ideal for tasks like text parsing and pattern matching.
Question-12. What is a "pattern" in SNOBOL?
Answer-12: A pattern in SNOBOL is a sequence of elements that specifies a search criteria for strings.
Question-13. How are variables declared in SNOBOL?
Answer-13: Variables in SNOBOL are implicitly declared when first used.
Question-14. What is the POS function in SNOBOL?
Answer-14: POS(n) matches the nth character in a string.
Question-15. What is the ANY function in SNOBOL?
Answer-15: ANY(charset) matches any single character from the specified set.
Question-16. How does SNOBOL handle loops?
Answer-16: SNOBOL uses branching and labels for loops instead of traditional loop constructs.
Question-17. What is the LEN function in SNOBOL?
Answer-17: LEN(n) matches a substring of length n.
Question-18. What is the SPAN function in SNOBOL?
Answer-18: SPAN(charset) matches a contiguous sequence of characters from the specified set.
Question-19. What is the NOTANY function in SNOBOL?
Answer-19: NOTANY(charset) matches a single character not in the specified set.
Question-20. What is the TAB function in SNOBOL?
Answer-20: TAB(n) positions the search at the nth character in a string.
Question-21. How does SNOBOL handle conditionals?
Answer-21: SNOBOL uses labels and branching for conditional logic.
Question-22. What are arrays called in SNOBOL?
Answer-22: Arrays in SNOBOL are referred to as tables.
Question-23. How are tables created in SNOBOL?
Answer-23: Tables are created using the TABLE() function.
Question-24. What is the RTAB function in SNOBOL?
Answer-24: RTAB(n) moves the search backward by n characters.
Question-25. Does SNOBOL support recursion?
Answer-25: Yes, SNOBOL supports recursion through branching and functions.
Question-26. What are "patterns" used for in SNOBOL?
Answer-26: Patterns are used for searching, extracting, and transforming text.
Question-27. What is the OUTPUT keyword in SNOBOL?
Answer-27: OUTPUT is used to print data to the console.
Question-28. What is the role of the INPUT keyword in SNOBOL?
Answer-28: INPUT is used to read data from the user or a file.
Question-29. What is backtracking in SNOBOL?
Answer-29: Backtracking in SNOBOL allows patterns to retry matches when a failure occurs.
Question-30. Does SNOBOL support user-defined functions?
Answer-30: Yes, SNOBOL supports user-defined functions for modularity.
Question-31. What is the IDENT function in SNOBOL?
Answer-31: IDENT(var) checks if the variable var is undefined.
Question-32. How does SNOBOL handle error handling?
Answer-32: SNOBOL uses special patterns and error labels for error handling.
Question-33. What is a "thunk" in SNOBOL?
Answer-33: A thunk in SNOBOL is a delayed computation or a reference to an expression.
Question-34. How does SNOBOL handle dynamic typing?
Answer-34: Variables in SNOBOL can hold any type of value without explicit type declarations.
Question-35. What is the BREAK function in SNOBOL?
Answer-35: BREAK(charset) matches up to but not including any character in the specified set.
Question-36. How are comments written in SNOBOL?
Answer-36: Comments in SNOBOL are written using the * symbol at the beginning of the line.
Question-37. Can SNOBOL handle file I/O?
Answer-37: Yes, SNOBOL has commands for reading and writing files.
Question-38. What is the REM function in SNOBOL?
Answer-38: REM(expr) evaluates and removes the result of the expression expr.
Question-39. What are user-defined patterns in SNOBOL?
Answer-39: User-defined patterns are patterns created by the programmer using SNOBOL's functions.
Question-40. What are the control flow constructs in SNOBOL?
Answer-40: Control flow is managed using labels, GOTO statements, and conditional branching.
Question-41. Does SNOBOL support modular programming?
Answer-41: SNOBOL supports modularity through user-defined functions and patterns.
Question-42. How does SNOBOL perform concatenation?
Answer-42: Concatenation in SNOBOL is done using the . operator.
Question-43. What is the EVAL function in SNOBOL?
Answer-43: EVAL(expr) evaluates the given expression dynamically at runtime.
Question-44. Does SNOBOL support object-oriented programming?
Answer-44: No, SNOBOL does not support object-oriented programming.
Question-45. How are subroutines defined in SNOBOL?
Answer-45: Subroutines are defined as user-defined functions.
Question-46. What is the ARROW operator in SNOBOL?
Answer-46: The ARROW operator (=>) assigns values to table elements.
Question-47. How are strings manipulated in SNOBOL?
Answer-47: Strings are manipulated using patterns, concatenation, and functions like POS and SPAN.
Question-48. What is the STOP statement in SNOBOL?
Answer-48: STOP terminates the program.
Question-49. Is SNOBOL still used today?
Answer-49: SNOBOL is rarely used today but remains influential in the field of text processing.
Question-50. What are some modern alternatives to SNOBOL?
Answer-50: Modern alternatives include Python, Perl, and regular expressions libraries.
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