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JavaScript result:

Java result:

C++ result:

prog.js:2:1 TypeError: invalid assignment to const 'PI'
Stack:
@prog.js:2:1

Main.java:4: error: cannot assign a value to final variable PI
    PI = 3;   // Error: cannot assign a value to final variable
    ^
1 error

prog.cpp: In function ?int main()?:
prog.cpp:6:6: error: assignment of read-only variable ?PI?
    6 |   PI = 3;   // Error: assignment of read-only variable
      |   ~~~^~