Explain the relevance of operator precedence in a few sentences.

Pp# 2: can you help me solve and understand this practice problem please? A step by step explanation would be appreciated. Thank you!

Explain the relevance of operator precedence in a few sentences.

What you need to do:1. Type that code up and run it to make sure that it is doing what it is supposed to do. Provide the strings in the header of the program when prompted.2. Use the logic in that program to design your own Recursive Descent parser in C for the following grammar:S →aABA →Abc | bB →d3. Make sure that you choose at least two strings that pass the grammar and one string that does not pass the grammar just like I did in the model program4. Submit both the code and a screen shot of your results for the choice of strings that you provided. Below is the C code that can be used to implement a Recursive Descent parser for the above grammar/* Recursive Descent Parser for the Expression Grammar:S → (L) |aL' →,SL'|εL → SL'Valid inputs: (a,(a,a)) and (a,((a,a),(a,a)))Invalid inputs:(aa,a)*/#include <stdio.h>#include <string.h>int S(), Ldash(), L();char *ip;char string[50];int main()               {printf("Enter the string\n");scanf("%s", string);ip =…

The next 3 questions pertain to the following grammar from the book. The string to test is aba. S→ XY X→ XA | a | b Y→AY|a A→ a Question 1 Enter which variables can generate the following substrings of length 2 as found in stage 2 of the CYK algorithm. Enter no spaces. Enter multiple variables separated by a comma in alphabetical order (e.g., XY). If there are no variables that generate the substring, enter none. ab e ba e Question 2 Enter which variables can generate the following substrings of length 3 as found in stage 3 of the CYK algorithm. Enter no spaces. Enter multiple variables separated by a comma in alphabetical order (e.g., X,Y). If there are no variables that generate the substring, enter none. a ba e ab a +

PLease answer both question with clear explanastion. Thanks in advance 1. What is the regular expression for the language, over alphabet {a, b}, of strings that start and end with the substring ab and contain one or more repetition of the substring bab.2. Describe in English the language associated with the following regular expression: (a+b)*a(a+b)*a*(a+b)*a(a+b)*

Can someone write a prolog program using prolog facts and rules to solve the following? "A woman points to a portrait of a man, saying: "his brother's father is the only son of my grandfather." What's the relationship of the woman and the man in the portrait? Can you create some facts and one rule to identify the relationship between the woman and the man in the portrait?"

Explain the relevance of operator precedence in a few sentences.

For each statement below, decide whether it is true or false. If it is true, prove it. Ifit is not true, give a counterexample. All parts refer to languages over the alphabet {a, b}. (b) If Li C L2, and L2 cannot be accepted by an FA, then Li cannot.

We want to construct a regular expression for the language accepted by the following DFA: b а,b a ´a 92 Follow the general algorithm as seen in class and in our textbook to construct this regular expression. (In order to simplify grading, you don't need to simplify the regular expressions, and you should follow the state removal in the specified order.) 1. Construct a GNFA (in the special form described in the textbook and in class) equivalent to this DFA. 2. Remove the state q1 from this GNFA. 3. Remove the state q2 from this GNFA. 4. Remove the state qo from this GNFA.