/*

Write a JavaScript program to check if a given string is upper case or not.

*/

// const isUpperCase = (str) => {

// if(str === str.toUpperCase()) return true;

// return false;

// }

const isUpperCase = str => str === str.toUpperCase();

console.log(isUpperCase('ABC'));

console.log(isUpperCase('A3@$'));

console.log(isUpperCase('aB4'));