Assume that L is regular. Let p be the pumping length guaranteed by the Pumping Lemma. Take w =0p10p1 . Clearly, w ∈ L, and |w| ≥ p. We need to show that for any partition w = xyz, with |xy| ≤ p, and y≠∈, there exists i ≥ 0, such that xyiz ∉ L. […]
ALGORITHM: Get the input expression and store it in the input buffer. Read the data from the input buffer one at the time and convert in to corresponding Non Terminal using production rules available. Perform push & pop operation for LR parsing table construction. Display the result with conversion of corresponding input symbols to production […]
1. 0(0+1)*0 This regular expression matches any string that starts and ends with 0. Breakdown: The first 0 ensures the string starts with 0. (0+1)* means the middle part of the string can be any combination of 0s and 1s (zero or more occurrences of 0 or 1). The final 0 ensures the string ends […]
Lex program contains three sections: definitions, rules, and user subroutines. Each section must be separated from the others by a line containing only the delimiter, %%. The format is as follows: definitions %% rules %% user_subroutines In definition section, the variables make up the left column, and their definitions make up the right column. Any […]
This program reads a C source code file, tokenizes it into keywords, identifiers, and special characters, and counts the lines. It also ignores redundant spaces, tabs, and new lines while processing the input #include <stdio.h>#include <stdlib.h>#include <string.h>#include <ctype.h>void keyword(char str[10]) {// Check if the given string is a keyword or an identifierif (strcmp(“for”, str) == […]
This program is designed to read an operator input from the user and determine what type of operator it is. It uses a switch statement to analyze the input and identify single-character and double-character operators, such as: Greater than (>) and Greater than or equal to (>=) Less than (<) and Less than or equal […]
To convert the regular expression (a + b)*abb from an NFA to a DFA using Thompson’s construction, we will follow these steps: Create an NFA for (a + b)*abb using Thompson’s construction. Convert the NFA into a DFA using the subset construction method. Provide the transition table for the DFA. Draw the DFA diagram. Step […]
Instructions are the fundamental commands executed by a computer’s Central Processing Unit (CPU). These commands tell the CPU what actions to perform on the data, which can include tasks like arithmetic operations, data movement, and branching (decision-making). In computer organization, understanding instructions and how they are sequenced is critical for executing programs efficiently. 1. Instructions: […]
This C program is designed to recognize and classify strings according to three specific rules or patterns: a*: A string consisting of zero or more ‘a’ characters. a*b+: A string that starts with zero or more ‘a’ characters followed by one or more ‘b’ characters. abb: A string that follows exactly the pattern ‘abb’. The […]
Rules for Valid Identifiers in C: The identifier must begin with a letter or an underscore (_). It cannot start with a number or any other symbol. Subsequent characters may be letters, digits, or underscores. Special characters like @, #, or spaces are not allowed. Keywords cannot be used as identifiers. Keywords like int, float, […]
