PROGRAMMING:C programming experiment 3-4
Calculate 1-1 / 2 + 1 / 3-1 / 4 + $$... $+ 1 / 99-1 / 100 + $$... $, until the absolute value of the last item is less than 10 $$^ {- 4} $$. The result is defined as double precision real type.
###Input format:
There is no need to enter data from the keyboard.
###Output format:
Output results in the form of output samples.
###Input example:
```in
```
###Output example:
```out
zero point six nine three one nine seven
```
answer：If there is no answer, please comment
###Input format:
There is no need to enter data from the keyboard.
###Output format:
Output results in the form of output samples.
###Input example:
```in
```
###Output example:
```out
zero point six nine three one nine seven
```
answer：If there is no answer, please comment