PROGRAMMING:Converting Fahrenheit degree to Centigrade degree

Ask a Fahrenheit degree from user, and then convert it to be a centigrade degree. Output the centigrade degree. Both degrees' data type are integer.（10 points）
centigrade= 5/9(fahrenheit-32）
### Input Specification:
Input a integer number to be the fahrenheit degree.
### Output Specification:
For each test case, print in a line the value of the centigrade degree (integer).
### Sample Input:
```in
one hundred
```
### Sample Output:
```out
the corresponding centigrade degree:c=37
```
### Sample Input:
```in
thirty-two
```
### Sample Output:
```out
the corresponding centigrade degree:c=0
```







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