How to send data from one activity to another using intent

Hello android users there are two types of  sending data from one activity to another by using intent, if we want to send data from MainActivity.java to SecondActivity.java !

1) using bundle

In MainActivity.java : send data

Intent intent=new Intent(MainActivity.this,SecondActivity.class);
Bundle bundle=new Bundle();
bundle.putString("name","Sushant"):
bundle.putString("age","34");
intent.putExtras(bundle);
startActivity(bundle);

In SecondActivity.java : Get data

Bundle bundle=getIntent().getExtras();
String name=bundle.getString("name");
String age=bundle.getString("age");

. 2) Simple Intent.

In MainActivity.java : send data

Intent intent=new Intent(MainActivity.this,SecondActivity.class);
intent.putExtra("name","Sushant");
intent.putExtra("age","32");
StartActivity(intent);

In SecondActivity.java : Get data

Intent intent=getIntent();
String name=intent.getStringExtra("name");
String age=intent.getStringExtra("age");

How to print hello world in C programing ?

#include<stdio.h>
int main(){
     printf("Hello World");
return 0;
}

OUTPUT :: 
Hello World