#while loop

sum = 0

n = int(input ("N: "’))

While n>0:

sum =sum + n

n-=1

print(“sum :”,sum)

print (“bye”)

Output show

N=5

Sum = 15

Bye

#while loop

sum = 0

n = int(input ("N: "’))

While n>0:

sum =sum + n

n-=1

print(“sum :”,sum)

print (“bye”)

Output show

N=5

Sum = 15

Bye