(function(){
	/*test cases*/
  var people = [{name:'todd ', age: 40,gender:'male'},{name:'sarah', age: 33,gender:'female'}];
  var more_people = [{name:'mark', age: 18 ,gender:'male'},{name:'louise', age: 33,gender:'female'},{name:'tim', age: 47,gender:'female'} ];

	let gender = 'male';
  let upper_age = 40;
  let lower_age = 30;
  /*
   * Return all males from given input with age between 30-40.
   * param (people) - array of objects containing age,name,gender information.Assume correct input.
   * Returns filtered array of object with same formatting as input.
   */
   var filter_people = (to_filter) => {
    return to_filter.filter(filter_conditions = (person) => {
       return person.gender === gender && person.age >=lower_age && person.age <= upper_age
     });
   }
		//console.log(filter_people(people)); --> call function here
 }());