1 -a) Write a LEX program to recognize valid arithmetic expression. Identifiers in the expression could be only
integers and operators could be + and * . Count the identifiers & operators present and print them separately.
1 - b) Write YACC program to evaluate arithmetic expression involving operators: +, -, *, and /
2 - Develop, Implement and Execute a program using YACC tool to recognize all strings ending with b preceded by n a’s using the grammar an b (note: input n value)
3 - Design, develop and implement YACC/C program to construct Predictive / LL(1) Parsing Table for the grammar rules: A ®aBa , B ®bB | e. Use this table to parse the sentence: abba$
4 - Design, develop and implement YACC/C program to demonstrate Shift Reduce Parsing technique for the grammar rules: E ®E+T | T, T ®T*F | F, F ®(E) | id and parse the sentence: id + id * id.
5 - Design, develop and implement a C/Java program to generate the machine code using
Triples for the statement A = -B * (C +D) whose intermediate code in three-address form:
T1 = -B
T2 = C + D
T3 = T1 + T2
A = T3
6 - a) Write a LEX program to eliminate comment lines in a C program and copy the resulting program into a separate file.
6 - b) Write YACC program to recognize valid identifier, operators and keywords in the given text (C program) file.
7 - Design, develop and implement a C/C++/Java program to simulate the working of Shortest remaining time and Round Robin (RR) scheduling algorithms. Experiment with different quantum sizes for RR algorithm.
8 - Design, develop and implement a C/C++/Java program to implement Banker’s algorithm. Assume suitable input required to demonstrate the results.
9 - Design, develop and implement a C/C++/Java program to implement page replacement algorithms LRU and FIFO. Assume suitable input required to demonstrate the results.
10 - a). Design, develop and implement a C/C++/Java program to simulate a numerical calculator.
10 - b). Design, develop and implement a C/C++/Java program to simulate page replacement technique.
11 - Program to recognize whether a given sentence is simple or compound.
12 - Write a C++ program to emulate the Unix ln command