PROGRAMMING:Lowercase to uppercase
Enter a string to convert it to uppercase.
### input format:
The string can include English characters, numbers, and symbols.
### output format:
see sample output
### input sample:
```in
cvoid2020
```
### output sample:
```out
CVOID2020
```
answer:If there is no answer, please comment
### input format:
The string can include English characters, numbers, and symbols.
### output format:
see sample output
### input sample:
```in
cvoid2020
```
### output sample:
```out
CVOID2020
```
answer:If there is no answer, please comment