First Smart Contract

Building your first smart contract

#include <eosio/eosio.hpp>
#include <eosio/name.hpp>

class [[eosio::contract]] hello : public eosio::contract {
   public:
      using eosio::contract::contract;

      [[eosio::action]]
      void hi(eosio::name nm) {
         eosio::print_f("Hello, %\n", nm);
      }
};

Navigate to the hello folder in examples (./examples/hello).
You should then see the hello.cpp file
Now run the compiler

$ eosio-cpp -abigen hello.cpp -o hello.wasm

Or with CMake

$ mkdir build
$ cd build
$ cmake ..
$ make

This will generate two files:

The compiled binary wasm (hello.wasm)
The generated ABI file (hello.abi)