System Software Lab | All In One
VTU System Software Lab
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Program 1
a] Write a LEX program to recognize valid arithmetic expressions. Identifiers in the expression could be only
integers and operators could be + and *. Count the identifiers & operators present and print them separately.
b] Write YACC program to evaluate arithmetic expression involving operators: +, -, *, and /.
Program 2:- Develop, Implement and execute a program using the YACC tool to recognize all strings ending with b preceded by n a’s using the grammar a b (note: input n value).
Program 3:-Design, develop and implement the YACC/C program to construct a Predictive / LL(1) Parsing Table for the grammar rules: AàaBa, BàbB |ϵ. Use this table to parse the sentence: abba$
Program 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.
Program 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
Program 6
a) Write a LEX program to eliminate comment lines in a C program and copy the resulting program into a separate file.
b) Write the YACC program to recognize valid identifiers, operators, and keywords in the given text (C program) file.
Program 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.
Program 8:- Design, develop and implement a C/C++/Java program to implement Banker’s algorithm. Assume suitable input required to demonstrate the results.
Program 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
Program 10
a] Design, develop, and implement a C/C++/Java program to simulate a numerical calculator.
b] Design, develop and implement a C/C++/Java program to simulate page replacement technique.
Program 11:- Program to recognize whether a given sentence is simple or compound.
Program 12:- Write a C++ program to emulate the Unix ln command
