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//Nirali Patel
//Ucid:np92
#include <iostream>
#include <string>
#include <fstream>
#include <stack>
using namespace std;
//userChoice function
void userChoice()
{
//variables declaration
string str;
char user_input;
int max_n;
//First your program asks the user if s/he wants to enter a string. The user then enters
//“y” for “yes”, or “n” for “no”
for(int i = 0; i < max_n; i++){
cout<<"Do you want to enter a string?"<<endl;
cin>>user_input;
//checks if user enter 'y', user needs to enter a string over alphabet and read the string and print it
if(user_input == 'y')
{
cout<<"please enter a string over alphabet:"<<endl;
cin>> str;
}
//reads the string over alphabet
//prints the string
cout<<"The string read is: "<<str<<endl;
//checks if user enters 'n', the program terminates
if(user_input == 'n')
{
cout<<"Program terminates...."<<endl;
exit(0);
}
//if the user neither enters 'y' and 'n', the program asks again to enter a string
while(user_input != 'y' && user_input != 'n')
{
cout<<"wrong input. Please try again"<<endl;
cin>>user_input;
}
}
}
//Program processes the string on PDA
void PDA_implementation()
{
int start_state = '%';
int n = 5;
int array[100] = {'%', '+', '-', '*', '/', '(', ')', '.', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
if(start_state == '%'){
//prints out the start state of the PDA
cout<<"The start state of PDA is: "<< start_state <<endl;
}
}
//PDA transition
//push function
void push(){
int array[100] = {'%', '+', '-', '*', '/', '(', ')', '.', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
string str;
if(str == "%"){
array[0]++;
cout<<"The symbol that was read was: "<<str<<endl;
}
}
//pop function
void pop(){
}
//main function
int main()
{
stack <int> mystack;
int count = 1;
//Prints project 2, section number, semester, written by, & Instructor: Marvin Nakayama,
[email protected]
cout<<"Project 2 for CS 341"<<endl;
cout<<"Section number: 007"<<endl;
cout<<"Semester: Fall 2022"<<endl;
cout<<"Written by: Nirali Patel"<<endl;
cout<<"Instructor: Marvin Nakayama,
[email protected]"<<endl;
//function calls
userChoice();
PDA_implementation();
push();
pop();
//push operation
mystack.push('%');
mystack.push('-');
mystack.push('/');
mystack.push(')');
mystack.push('.');
mystack.push('x');
mystack.push(0);
mystack.push(2);
mystack.push(4);
mystack.push(6);
mystack.push(8);
//pop operation
mystack.pop();
return 0;
}
y
%381.5886%
y
%.8+7.-8.00/90.765+%
y
%7956.+.492*341.2/060.10/52581.263-.9+.53/7.%
y
%382.89*34%
y
%4.239-.*7.29%
y
%6.88.6+32.208%
y
%(1.2+(3.4-.9)/39).3%
y
%(.3)64%
y
%((824.23+(9.22-00.0)*21.2))+((.2/7.))%
y
%(())%
y
%((14.252+(692.211*(.39+492.1))/49.235)%
y
%+6.5%
y
%26.0*(.87/((4.+.2)/(23.531)-2.9)+6.)/(((823.*.333-57.*8.0)/.33+.0))%
y
%.0*(32.922+.7-*9.))%
y
%(4.+(.8-9.))/2.)*3.4+(5.21/34.2%
n
