Fix cpp, add level when making post.

-<p align="center">
-  <a href="http://nestjs.com/" target="blank"><img src="https://nestjs.com/img/logo_text.svg" width="320" alt="Nest Logo" /></a>
-</p>
+<div id="top"></div>
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-  <p align="center">A progressive <a href="http://nodejs.org" target="_blank">Node.js</a> framework for building efficient and scalable server-side applications.</p>
+
+<!-- PROJECT SHIELDS -->
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+*** I'm using markdown "reference style" links for readability.
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+[![Contributors][contributors-shield]][contributors-url]
+[![Forks][forks-shield]][forks-url]
+[![Stargazers][stars-shield]][stars-url]
+[![Issues][issues-shield]][issues-url]
+[![MIT License][license-shield]][license-url]
+[![LinkedIn][linkedin-shield]][linkedin-url]
+
+
+
+<!-- PROJECT LOGO -->
+<br />
+
+<div align="center">
+  <a href="https://github.com/github_username/repo_name">
+    <img src="images/logo.png" alt="Logo" width="80" height="80">
+  </a>
+<h3 align="center">Learn In Web(Backend)</h3>
+
   <p align="center">
   <p align="center">
-<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/v/@nestjs/core.svg" alt="NPM Version" /></a>
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+    NestJS Backend for
+    <a href="http://khuhub.khu.ac.kr/2021105619/learn-in-web-backend"><strong>Learn In Web</strong></a>
+    <br />
+    <a href="https://code.sungjin.dev"><strong>View Demo »</strong></a>
+    <br />
+    <br />
+    <a href="http://khuhub.khu.ac.kr/2021105619/learn-in-web-backend/issues">Report Bug</a>
+    ·
+    <a href="http://khuhub.khu.ac.kr/2021105619/learn-in-web-backend/issues">Request Feature</a>
+  </p>
+
+</div>
+
+
+
+<!-- TABLE OF CONTENTS -->
+
+<details>
+  <summary>Table of Contents</summary>
+  <ol>
+    <li>
+      <a href="#about-the-project">About The Project</a>
+      <ul>
+        <li><a href="#built-with">Built With</a></li>
+      </ul>
+    </li>
+    <li>
+      <a href="#getting-started">Getting Started</a>
+      <ul>
+        <li><a href="#prerequisites">Prerequisites</a></li>
+        <li><a href="#installation">Installation</a></li>
+      </ul>
+    </li>
+    <li><a href="#usage">Usage</a></li>
+    <li><a href="#roadmap">Roadmap</a></li>
+    <li><a href="#contributing">Contributing</a></li>
+    <li><a href="#license">License</a></li>
+    <li><a href="#contact">Contact</a></li>
+    <li><a href="#acknowledgments">Acknowledgments</a></li>
+  </ol>
+</details>
+
+
+
+<!-- ABOUT THE PROJECT -->
+## About The Project
+
+[![Product Name Screen Shot][product-screenshot]](https://example.com)
+
+This project allows users to run codes and study without any IDE. This project focusd on schools, and students for study.
+
+Why we need this project? : 
+
+In Korea, learning programming is essential in school. So students wants to learn programming in school; however it is difficult for students to study programming without computer. 
+
+So run this project in school server, and allow students to access this page. So they can study, and run code only with phone, or tablet.
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+
+
+### Built With
+
+* [Nest.js](https://nestjs.com/)
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+
+
+<!-- GETTING STARTED -->
+## Getting Started
+
+This is an example of how you may give instructions on setting up your project locally.
+To get a local copy up and running follow these simple example steps.
+
+### Prerequisites
+
+This is an example of how to list things you need to use the software and how to install them.
+* npm
+  
+  ```sh
+  npm install npm@latest ts-node -g
+  ```
+
+* Compiler for languages
+    
+  ```sh
+    #For typescript
+    npm install -g ts-node
+    #Ubuntu, Debian Based
+    sudo apt update && sudo apt install golang build-essential
+    #RedHat Based
+    sudo yum update && sudo yum install golang build-essential
+    #Other
+    #install golang, cpp, c++ manually.
+    ```
+    
+* Docker, postgreSQL Database
+    
+  (You can manually change port, name, etc if you want.)
 
 
-## Description
+    ```sh
+    #Install docker for your OS. ex) sudo apt install docker
+    docker pull postgres
+    docker run -d -p 5432:5432 --name postgres-container -e POSTGRES_PASSWORD=Your_Password -v ~/pgdata:/Location_to_save_data/ postgres 
+    ```
     
     
-[Nest](https://github.com/nestjs/nest) framework TypeScript starter repository.
     
     
-## Installation
     
     
-```bash
-$ npm install
-```
+* Installation
 
 
-## Running the app
+1. Clone the repo
+   ```sh
+   git clone http://khuhub.khu.ac.kr/2021105619/learn-in-web-backend
+   ```
 
 
-```bash
-# development
-$ npm run start
+2. Install NPM packages
+   ```sh
+   npm install
+   ```
 
 
-# watch mode
-$ npm run start:dev
+3. Enter your DB URL in `.env`
+   ```js
+   DATABASE_URL="postgresql://_User:_Password@localhost:5432/postgres""
+   ```
 
 
-# production mode
-$ npm run start:prod
-```
+4. Migrate DB
 
 
-## Test
+   ```sh
+   npx prisma migrate dev
+   ```
 
 
-```bash
-# unit tests
-$ npm run test
+5. Start Server.
 
 
-# e2e tests
-$ npm run test:e2e
+   ```sh
+   nest start
+   ```
 
 
-# test coverage
-$ npm run test:cov
-```
    
    
-## Support
 
 
-Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please [read more here](https://docs.nestjs.com/support).
+<p align="right">(<a href="#top">back to top</a>)</p>
 
 
-## Stay in touch
 
 
-- Author - [Kamil Myśliwiec](https://kamilmysliwiec.com)
-- Website - [https://nestjs.com](https://nestjs.com/)
-- Twitter - [@nestframework](https://twitter.com/nestframework)
 
 
+<!-- USAGE EXAMPLES -->
+
+## Usage
+
+To Use Learn In Web, you need to use this backend; this project communicate via RESTful API.
+
+_For More Useage, please see frontend [Demo](http://khuhub.khu.ac.kr/2021105619/learn_in_web)_
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+
+
+<!-- ROADMAP -->
+## Roadmap
+
+- [x] Add README
+- [ ] Add How to Use for new user
+- [ ] Add Saving with DB
+- [ ] Multi-language Support
+  - [ ] English
+  - [ ] Japanese
+
+- [ ] View code run time
+- [ ] Add competition between users with runtime.
+
+See the [open issues](http://khuhub.khu.ac.kr/2021105619/learn-in-web-backend/issues) for a full list of proposed features (and known issues).
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+
+
+<!-- CONTRIBUTING -->
+## Contributing
+
+Contributions are what make the open source community such an amazing place to learn, inspire, and create. Any contributions you make are **greatly appreciated**.
+
+If you have a suggestion that would make this better, please fork the repo and create a pull request. You can also simply open an issue with the tag "enhancement".
+Don't forget to give the project a star! Thanks again!
+
+1. Fork the Project
+2. Create your Feature Branch (`git checkout -b feature/newFeature`)
+3. Commit your Changes (`git commit -m 'Add some newFeature'`)
+4. Push to the Branch (`git push origin feature/newFeature`)
+5. Open a Pull Request
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+
+
+<!-- LICENSE -->
 ## License
 ## License
 
 
-Nest is [MIT licensed](LICENSE).
+Distributed under the MIT License. See `LICENSE.txt` for more information.
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+
+
+<!-- CONTACT -->
+## Contact
+
+Your Name - [@taintlesscupcake](https://instagram.com/taintless_cupcake) - [email](mailto:me@sungjin.dev)
+
+Project Link: [http://khuhub.khu.ac.kr/2021105619/learn-in-web-backend](http://khuhub.khu.ac.kr/2021105619/learn-in-web-backend)
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+
+
+<!-- ACKNOWLEDGMENTS -->
+## Acknowledgments
+
+* []()
+* []()
+* []()
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+
+
+<!-- MARKDOWN LINKS & IMAGES -->
+<!-- https://www.markdownguide.org/basic-syntax/#reference-style-links -->
+[contributors-shield]: https://img.shields.io/github/contributors/github_username/repo_name.svg?style=for-the-badge
+[contributors-url]: https://github.com/github_username/repo_name/graphs/contributors
+[forks-shield]: https://img.shields.io/github/forks/github_username/repo_name.svg?style=for-the-badge
+[forks-url]: https://github.com/github_username/repo_name/network/members
+[stars-shield]: https://img.shields.io/github/stars/github_username/repo_name.svg?style=for-the-badge
+[stars-url]: https://github.com/github_username/repo_name/stargazers
+[issues-shield]: https://img.shields.io/github/issues/github_username/repo_name.svg?style=for-the-badge
+[issues-url]: https://github.com/github_username/repo_name/issues
+[license-shield]: https://img.shields.io/github/license/github_username/repo_name.svg?style=for-the-badge
+[license-url]: https://github.com/github_username/repo_name/blob/master/LICENSE.txt
+[linkedin-shield]: https://img.shields.io/badge/-LinkedIn-black.svg?style=for-the-badge&logo=linkedin&colorB=555
+[linkedin-url]: https://linkedin.com/in/linkedin_username
+[product-screenshot]: images/screenshot.png

@@ -18,12 +18,21 @@ export class PostService {
     example: string,
     example: string,
     testinput: string[],
     testinput: string[],
     testoutput: string[],
     testoutput: string[],
+    difficulty: number,
   ) {
   ) {
     const user = await this.auth.validateUser(
     const user = await this.auth.validateUser(
       (
       (
         await this.auth.getUserFromToken(token)
         await this.auth.getUserFromToken(token)
       ).id,
       ).id,
     );
     );
+    let level: Level;
+    if (difficulty == 1) {
+      level = 'LOW';
+    } else if (difficulty == 2) {
+      level = 'MEDIUM';
+    } else {
+      level = 'HIGH';
+    }
     const post = await this.prisma.post.create({
     const post = await this.prisma.post.create({
       data: {
       data: {
         author: {
         author: {
@@ -37,6 +46,7 @@ export class PostService {
         example: example,
         example: example,
         testinput: testinput,
         testinput: testinput,
         testoutput: testoutput,
         testoutput: testoutput,
+        level: level,
       },
       },
     });
     });
     return post;
     return post;

@@ -85,7 +85,7 @@ export class RunnerService {
   cpp(body: any, location: string) {
   cpp(body: any, location: string) {
     const output: Array<string> = [];
     const output: Array<string> = [];
     if (body.input == []) {
     if (body.input == []) {
-      const test = child_process.spawnSync('gcc', [location, '-o', 'tmp'], {
+      const test = child_process.spawnSync('g++', [location, '-o', 'tmp'], {
         encoding: 'utf8',
         encoding: 'utf8',
         shell: true,
         shell: true,
       });
       });
@@ -101,7 +101,7 @@ export class RunnerService {
       output.push(result.stdout as string);
       output.push(result.stdout as string);
     }
     }
     for (const ip of body.input) {
     for (const ip of body.input) {
-      const test = child_process.spawnSync('gcc', [location, '-o', 'tmp'], {
+      const test = child_process.spawnSync('g++', [location, '-o', 'tmp'], {
         encoding: 'utf8',
         encoding: 'utf8',
         shell: true,
         shell: true,
       });
       });
@@ -176,7 +176,7 @@ export class RunnerService {
       output.push(result.stdout as string);
       output.push(result.stdout as string);
     }
     }
     for (const ip of body.input) {
     for (const ip of body.input) {
-      const result = child_process.spawnSync('go', ['run', location], {
+      const result = child_process.spawnSync('ts-node', ['run', location], {
         encoding: 'utf8',
         encoding: 'utf8',
         shell: true,
         shell: true,
         input: ip,
         input: ip,