// program to calculate positive numbers only
// if the user enters a negative number, that number is skipped from calculation
// negative number -> loop terminate
// non-numeric character -> skip iteration
let sum = 0;
let number = 0;
while (number >= 0) {
// add all positive numbers
sum += number;
// take input from the user
number = parseInt(prompt('Enter a number: '));
// continue condition
if (isNaN(number)) {
console.log('You entered a string.');
number = 0; // the value of number is made 0 again
continue;
}
}
// display the sum
console.log(`The sum is ${sum}.`);