#include <bits/stdc++.h>
#include <vector>
#include <string>

using namespace std;
vector<string> split(string s, char ch)
{
  // std::string s = "scott>=tiger>=mushroom";
  vector<string>op;
  char delimiter = ch;

size_t pos = 0;
std::string token;
while ((pos = s.find(delimiter)) != std::string::npos) {
    token = s.substr(0, pos);
    op.push_back(token);
    // std::cout <<  << std::endl;
    s.erase(0, pos + 1);
}
    op.push_back(s);
    return op;
std::cout << s << std::endl;
}
vector<string> getResponses(vector<string> validAuthTokens, vector<string> requests) {
  vector<string> results;

  for (const string request : requests) {
    if (request[0] == "GET") {
      string lis = request[1];
      vector<string> l = split(lis, '?');
      vector<string> ll = split(l[1], '&');
      bool valid = false;
      string stri = "VALID,";

      for (const string& p : ll) {
        vector<string> pop = split(p, '=');
        if (pop[0] == "token" && validAuthTokens.contains(pop[1])) {
          valid = true;
        } else {
          stri += pop[0] + ',';
          stri += pop[1] + ',';
        }
      }

      if (valid) {
        stri = stri.substr(0, stri.length() - 1);
        results.push_back(stri);
      } else {
        results.push_back("INVALID");
      }
    } else {
      string lis = request[1];
      vector<string> l = split(lis, '?');
      vector<string> ll = split(l[1], '&');
      bool valid = false;
      bool valid1 = false;
      string stri = "VALID,";

      for (const string& p : ll) {
        vector<string> pop = split(p, '=');
        if (pop[0] == "token" && validAuthTokens.contains(pop[1])) {
          valid = true;
        } else if (pop[0] == "csrf" && pop[1].length() >= 8 && regex_match(pop[1], regex("[A-Za-z0-9]+$"))) {
          valid1 = true;
        } else {
          stri += pop[0] + ',';
          stri += pop[1] + ',';
        }
      }

      if (valid && valid1) {
        stri = stri.substr(0, stri.length() - 1);
        results.push_back(stri);
      } else {
        results.push_back("INVALID");
      }
    }
  }

  return results;
}
by

C++ Online Compiler

Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding!

Read inputs from stdin

OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

#include <iostream>
#include <string>
using namespace std;

int main() 
{
    string name;
    cout << "Enter name:";
    getline (cin, name);
    cout << "Hello " << name;
    return 0;
}

About C++

C++ is a widely used middle-level programming language.

  • Supports different platforms like Windows, various Linux flavours, MacOS etc
  • C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
  • Case-sensitive
  • C++ is a compiler based language
  • C++ supports structured programming language
  • C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
  • Like C, C++ also allows you to play with memory using Pointers.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
else {
   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
......    
    
default:     
 code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  //code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while (condition) {  
// code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {  
 // code 
} while (condition);

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.

How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}