Write a program that asks the user for a number n and prints the sum of the numbers 1 to n

Question

1- Write a program that asks the user for a number n and prints the sum of the numbers 1 to n
2- Modify the previous program such that only multiples of three or five are considered in the sum, e.g. 3, 5, 6, 9, 10, 12, 15 for n=17

Solution
q = 1
n = int(input('Enter number ='))
print (n + q)
What am I missing? ^ not sure about the second part. Can someone please help me out?

Answer 1

You are missing a loop

q = 1, sum = 0
n = int(input('Enter a number:'))
for i in range(q, n):
sum = sum + i
print (sum)

It is actually line 3 and 4 that make sure that every number between 1, inclusive and n, not inclusive is added
... You're familiar with loops?

Answer 2

Perhaps a different take on the first part (which may help you on the second part?)

function myFunc() {

var n=document.getElementById("inputBox").value;

var myArr = [];
var i = 0;
var sum = 0;

for (; n > 0; n--) {
myArr.push(n);
}

for (i=0; i < myArr.length; i++) {
sum += parseFloat(myArr[i]);
}

document.getElementById("demo").innerHTML = sum;
}

Answer 3

Write a program that asks the user for a number n and prints the sum of the numbers 1 to n. (using VB.Net)