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Completed at: 2023-01-10T04:54:31.561Z
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Completed languages: ruby
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Tags: Fundamentals, Strings
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Rank: 8 kyu
Write a function which converts the input string to uppercase.
For BF all inputs end with \0, all inputs are lowercases and there is no space between.
RISC-V: The function signature is
```c
void to_upper_case(const char *str, char *out);
```
`str` is the input string. Write your result to `out`. You may assume it is large enough to hold the result. You do not need to return anything.