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

Declare the equivalent 2 by 3 marks array. Use nested loops to print its two rows, change marks[1][2] from 3 to 8, and compute and print the total of all six elements after the change.

4 2 7
1 5 3
27