Creating a new HTML shell and C file

In this section, we are going to create a new shell.c file that exposes several functions called from our JavaScript. We will also use EM_ASM to call the InitWrappers function that we will define inside the new HTML shell file that we will be creating. This function will create wrappers inside JavaScript that can call functions defined in the WebAssembly module. Before creating the new HTML shell file, we need to create the C code that will be called by the JavaScript wrappers inside the HTML shell:

1. Create the new shell.c file as follows:

#include <emscripten.h>
#include <stdlib.h>
#include <stdio.h>

int main() {
    printf("Hello World\n");
    EM_ASM( InitWrappers() );
    printf("Initialization Complete\n");
}

void test() {
    printf("button test\n");
}

void int_test( int num ) {
    printf("int...