Start Project with File Runner

+node_modules
+a.out
+tmp.c
+

+{
+  "name": "learn_with_code",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "npm run build:live",
+    "build": "tsc -p .",
+    "build:live": "nodemon --watch 'src/**/*.ts' --exec \"ts-node\" src/index.ts"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "@types/express": "^4.17.13",
+    "@types/node": "^16.11.6",
+    "nodemon": "^2.0.14",
+    "ts-node": "^10.4.0",
+    "typescript": "^4.4.4"
+  },
+  "dependencies": {
+    "express": "^4.17.1"
+  }
+}

+const _PORT = 3000;
+
+import * as express from "express";
+import {Runner} from "./runner";
+
+const app = express.default();
+
+app.use(express.json());
+
+/*RESTful API*/
+
+app.post("/runcode", function (req, res) {
+  var run = new Runner(req);
+  run.run();
+  res.send(run.output);
+});
+
+
+
+app.listen(_PORT, () => {
+  console.log("server started at port " + _PORT);
+});

+import * as child_process from "child_process";
+import * as fs from "fs";
+
+export class Runner {
+  type: string;
+  input: Array<string>;
+  output: Array<string> = [];
+  time: Date = new Date();
+  constructor(req: any) {
+    this.type = req.body.type;
+    this.input = req.body.input;
+    fs.writeFileSync("tmp." + this.type, req.body.code);
+  }
+  run() {
+    switch (this.type) {
+      case "c": {
+        this.c();
+      }
+      case "c++": {
+        this.cpp();
+      }
+      case "js": {
+        this.js();
+      }
+      case "go": {
+        this.go();
+      }
+      case "ts": {
+        this.ts();
+      }
+    }
+  }
+  c() {
+    if ((this.input = [])) {
+      const test = child_process.spawnSync("gcc", ["~/OSS/main/tmp.c"], {
+        encoding: "utf8",
+        shell: true,
+      });
+      console.log(test.stderr);
+      const result = child_process.spawnSync("~/OSS/main/a.out", {
+        encoding: "utf8",
+        shell: true,
+      });
+      console.log(result.stdout);
+      this.output.push(fix(result.stdout));
+    }
+    for (let ip of this.input) {
+      const test = child_process.spawnSync("gcc", ["~/OSS/main/tmp.c"], {
+        encoding: "utf8",
+        shell: true,
+      });
+      console.log(test.stderr);
+      const result = child_process.spawnSync("~/OSS/main/a.out", {
+        encoding: "utf8",
+        shell: true,
+        input: ip,
+      });
+      console.log(result.stdout);
+      this.output.push(fix(result.stdout));
+    }
+  }
+  cpp() {
+    if (this.input = []) {
+      const test = child_process.spawnSync("gcc", ["~/OSS/main/tmp.c"], {
+        encoding: "utf8",
+        shell: true,
+      });
+      console.log(test.stderr);
+      const result = child_process.spawnSync("~/OSS/main/a.out", {
+        encoding: "utf8",
+        shell: true,
+      });
+      console.log(result.stdout);
+      this.output.push(fix(result.stdout));
+    }
+    for (let ip of this.input) {
+      const test = child_process.spawnSync("gcc", ["~/OSS/main/tmp.c"], {
+        encoding: "utf8",
+        shell: true,
+      });
+      console.log(test.stderr);
+      const result = child_process.spawnSync("~/OSS/main/a.out", {
+        encoding: "utf8",
+        shell: true,
+        input: ip,
+      });
+      console.log(result.stdout);
+      this.output.push(fix(result.stdout));
+    }
+  }
+  js() {
+    if (this.input = []) {
+      const test = child_process.spawnSync("node", ["~/OSS/main/tmp.c"], {
+        encoding: "utf8",
+        shell: true,
+      });
+      console.log(test.stdout);
+      this.output.push(fix(test.stdout));
+    }
+    for (let ip of this.input) {
+      const test = child_process.spawnSync("node", ["~/OSS/main/tmp.c"], {
+        encoding: "utf8",
+        shell: true,
+        input: ip,
+      });
+      console.log(test.stdout);
+      this.output.push(fix(test.stdout));
+    }
+  }
+  go() {
+    if (this.input = []) {
+      const test = child_process.spawnSync("go", ["run", "~/OSS/main/tmp.c"], {
+        encoding: "utf8",
+        shell: true,
+      });
+      console.log(test.stdout);
+      this.output.push(fix(test.stdout));
+    }
+    for (let ip of this.input) {
+      const test = child_process.spawnSync("go", ["run", "~/OSS/main/tmp.c"], {
+        encoding: "utf8",
+        shell: true,
+        input: ip,
+      });
+      console.log(test.stdout);
+      this.output.push(fix(test.stdout));
+    }
+  }
+  ts() {
+    if (this.input = []) {
+      const test = child_process.spawnSync("ts-node", ["run", "~/OSS/main/tmp.c"], {
+        encoding: "utf8",
+        shell: true,
+      });
+      console.log(test.stdout);
+      this.output.push(fix(test.stdout));
+    }
+    for (let ip of this.input) {
+      const test = child_process.spawnSync("ts-node", ["run", "~/OSS/main/tmp.c"], {
+        encoding: "utf8",
+        shell: true,
+        input: ip,
+      });
+      console.log(test.stdout);
+      this.output.push(fix(test.stdout));
+    }
+  }
+}
+
+const fix = (a: any): string => {
+  if (typeof a === "string") {
+    return a;
+  }
+  return "";
+};

+<!DOCTYPE html>
+<html>
+  <head>
+    <link rel="stylesheet" href="css/style.css" />
+  </head>
+  <body>
+    <div class="wrapper">
+      <div class="header">Code in Web</div>
+      <h1>My First Heading</h1>
+      <p>My first paragraph.</p>
+    </div>
+  </body>
+</html>