function a (text="called function alert") {
    alert(text);
}
/* a("hello"); */ 

/* function cube (number) {
    return number **3;
}

a(cube(3)); */

/* function avg(a,b){
    return ((a+b)/2);
}

a(avg(1,2));
a(avg(10,5)); */


/* function sum3 (a=0,b=0,c=0) {
    return a+b+c;
}

a(sum3(1,2,3));
a(sum3(5,10,100500));
a(sum3(10,5)); */


/* function intRandom (min,max=0) {
    if(max == 0 ){
        return Math.floor(Math.random()* (min-max+1))+max;
    }
    return Math.floor(Math.random()* (max-min+1))+min;
}

a(intRandom(100)); */

/* function greetAll(...names) {
    let greetArr = [];
    for(let i = 0 ; i< arguments.length; i++){
        greetArr.push(names[i]);
    }
    alert(greetArr);
}

greetAll("SPYDIK","KYRKA","VETAL"); */

function sum(...numarr){
    /* let result=0;
    for(let i =0; i<arguments.length;i++){
         debugger;
        result=result+arguments[i];
    }
    alert(result); */
    let arrforsum = [];
    for(let i = 0; i<arguments.length; i++){
        arrforsum.push(numarr[i]);
    }
    let sum = 0 ;
    for(let i =0; i<arrforsum.length;i++){
        sum=sum+arrforsum[i];
    }
    alert(sum);
    /* return alert(numarr.reduce((a,b) => a+b)); */
}

sum(...[10,2,20]);