Write it, run it, read the output

This is a scratch drill — your code runs, nothing is graded or recorded. No test cases, no expected output, no verdict.

TASK

Using C++ standard library operations on the running example, print the length of text, extract and print "Java", print whether "Java" occurs, print an uppercase copy as "LEARN JAVA", and then print the unchanged original text.

10
Java
1
LEARN JAVA
Learn Java