uj5u.com熱心網友回復:
sum = 0
a = int(input("請輸入一個數,將計算1+2+..+n\n"))
for i in range(a+1):
sum += i
print("1+2+..+%d=%d" %(a,sum))
請輸入一個數,將計算1+2+..+n
5
1+2+..+5=15
uj5u.com熱心網友回復:
sum1=0num=int(input('輸入整數: '))
print(num,sum(list(i for i in range(1,num+1))))
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