[C++] Given a boolean string, for example: string s = \"T => F ^ (F v F)\"; Plac

Question

[C++]

Given a boolean string, for example: string s = "T => F ^ (F v F)";

Place the elements into the following vector: vector<string> boolSymbols

But the elements must be placed in the order given,element by element, excluding elemtents such as

'=>' which must be placed in the vector altogether in one element.

Heres a string of valid bools: string validBool = { ''T','F','^', 'v', '~', '=','>','<','=','>', '(', ')' };

But remeber '=>' and '<=>' are to remain the together.

So in summary: Go element by element in a given string, and check if the element is '=' or '<' if it is one those check the next element to see if it is  '=>' or the next element to check if it is '<=>'. After this place that element in the vector, and if it is '<=>' or  '=>' place that entire character in a single element of the vector.

Explanation / Answer

#include<iostream>
#include<vector>
#include<string>
using namespace std;
int main()
{
   string s;//variable to store boolean string...
   char validBool[] = { 'T','F','^', 'v', '~', '=','>','<','=','>', '(', ')' };
  
   cout<<"Enter boolean string :";//taking input..
   getline(cin,s);
  
   vector<string> boolSymbols;//to store symbols of boolean string.
  
   int i;
   string n;
   for(i=0;s[i]!='';i++)//adding symbols to vector...
   {
           n="";
           n=n+s[i];
           if(s[i]=='=')
           {
               if(s[i+1]=='>')//checking next element
               {
                   i++;
                   boolSymbols.push_back("=>");//adding to vector...
               }
               else
               {
                   boolSymbols.push_back(n);//adding to vector...  
               }  
           }
           else if(s[i]=='<')
           {
               if(s[i+1]=='='&&s[i+2]=='>')//checking next element
               {
                   i=i+2;
                   boolSymbols.push_back("<=>");//adding to vector...  
               }
               else
               {
                   boolSymbols.push_back(n);   //adding to vector...
               }  
           }
           else
           {
               if(s[i]!=' ')//if it is not a space
                   boolSymbols.push_back(n);   //adding to vector...  
           }
   }
  
   //printing symbols in vector...
   cout<<"Symbols: ";
   for(i=0;i<boolSymbols.size();i++)
   {
       cout<<boolSymbols.at(i)<<endl;  
   }
      
  
   return 0;
}

output:

Enter boolean string :T => F ^ (F V F)
Symbols:
T
=>
F
^
(
F
V
F
)

Process exited normally.
Press any key to continue . . .

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