#include<iostream>
#include<string>

#include "rapidjson/document.h"
#include "rapidjson/error/en.h"
#include "rapidjson/writer.h"
#include "rapidjson/reader.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/prettywriter.h"
#include "rapidjson/ostreamwrapper.h"
using namespace rapidjson;
using namespace std;
struct task1 {
    int emp_id;
    string emp_name;
    string mail_id;
};
getdetails(Document &doc)
int main(){
    Document doc;
    string inputvalue = "{\"emp_id\":2938,\"emp_name\":\"Thanesh\",\"mail_id\":\"thanesh.worktual.com\"}";
    ParseResult ok = doc.Parse(inputvalue.c_str());
    if(!ok)
    {
        cout<<"Parse error !....."<<endl;
    }
    else if(doc.IsObject()){
        cout<<"not create to the parse object "<<endl;
    }
    getdetails(doc);
    return 0;
}
getdetails(Document &doc){
    task1 t1;
    if(doc.HasMember("emp_id")){
       t1.emp_id=doc["emp_id"].NextInt;
    }
        else{
         cout<<"getdetails is failed 'emp_id'missing on the json value!..."<<end
         }
         if(doc.Hasmember("emp_name")){
             t1.emp_name=doc[" emp_name"].NextString;
         }
         else{
              cout<<"getdetails is failed 'emp_name'missing on the json value!..."<<end
         }
         if(doc.HasMember("mail_id")){
             t1. mail_id=doc.[" mail_id"].NextString;
             else{
                  cout<<"getdetails is failed 'emp_name'missing on the json value!..."<<end
             }
         }
cout<<t1.emp_id<<"\n"<<t1.emp_name<<"\n"<<t1.mail_id<<"\n"<<endl;
    
    
    
    
    
    
    
}

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
}