while循环复习

start=1
end=True

while end:
    print(start)
    start+=1
    if start==10:
        end=False
#break  用于跳出所有循环，将不再执行

start=1
end=True

while True:
    print(start)
    
    if start==20:
        
        break
    start+=1
    continue
    
    print(‘jixu‘)


#continue  跳出本次循环，继续循环，不进行contiune下面操作，继续循环

start=1

while True:
    if start==7:
        start+=1
        continue
    print(start)
    if start==10:
        
        break
    start+=1
    
print(‘jixu‘)

sum=0
start=1
while True:
    sum=sum+start
    if start==100:
        break
    start+=1
print(sum)

start=0
while start<100:
    
    if start%2==0:
        
        print(start)
    start+=1
        
        
       
    
print(start)