Problem F: Character - Sum of Numbers

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Time Limit $1$ 秒/Second(s) Memory Limit $512$ 兆字节/Megabyte(s)
提交总数 $239$ 正确数量 $117$
裁判形式 标准裁判/Standard Judge 我的状态 尚未尝试
难度 分类标签 STL 字符串

Sum of Numbers 

Write a program which reads an integer and prints sum of its digits.

The input consists of multiple datasets. For each dataset, an integer x is given in a line. The number of digits in x does not exceed 1000. 

The input ends with a line including single zero. Your program should not process for this terminal symbol.

For each dataset, print the sum of digits in x.
123
55
1000
0
6
10
1