function areaOfTriangle(a, b, c){
if (a < b + c && b < a + c && c < a + b){
let p = (a + b + c) / 2;
let s = (p * (p - a) * (p - b) * (p - c))**0.5;
console.log(s)
} else {
return console.log('The triangle does not exist');
}
}
areaOfTriangle(3, 4, 5); 5-я строка