What wrong with the code, nonnegative

Question

entry = 0
sum = 0
print('Enter numbers: ')
while entry > 0:
entry = int(input())
if entry > 0:
sum += entry
print (sum)

Answer 1

your loop stop as soon as 'entry' is less or equal to zero... and you initialize 'entry' to zero, so your loop is never executed ^^

Answer 2

''' if <while> and <if> conditions are the same, why using them both?

and if entry is an input, why you declare it as zero first? '''

print('Enter numbers: ')
entry = int(input())
sum = 0

if entry > 0:
sum += entry
else:
print("entry must be greater than zero!")
print(sum)