C: #include<stdio.h> int main(){ printf("Hello World\n"); return 0; } C++: #include<iostream> using namespace std; int main(){ cout<<"Hello World"<<endl; return 0; } Python: print("Hello World\n") Node JS: console.log("Hello World"); Java Script: document.write("Hello World"); Objective C: #import <Foundation/Foundation.h> int main(int argc, const char* argv[]){ @autoreleasepool{ NSLog(@"Hello World"); } 0; } JAVA: class HelloWorld{ public static void main(String[] args){ System.out.println("Hello World"); } } BASH: echo "Hello World"