# File: ChapterControlFunc/while2.py
#   Add input until condition
"""
Enter numbers (0 to quit)
Enter n?  9
Enter n?  8
Enter n?  5
Enter n?  7
Enter n?  0
sum =  29.0
"""
def main():
    print("Enter numbers (0 to quit)")
    sum = 0
    n = float(input( "Enter n ?" ))
   
    while (n != 0) :        # stop when type 0
        sum = sum + n
        n = float(input( "Enter n?  " ))
                
    print("sum = ", sum)
    
main()