<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Document</title>
</head>
<body>
<script type="text/javascript" >
/* function sum(a,b,c){
return a+b+c
} */
function sum(a){
return(b)=>{
return (c)=>{
return a+b+c
}
}
}
const result = sum(1)(2)(3)
console.log(result);
</script>
</body>
</html>
