C++ Taskbook Level 5.9

Display the following pyramid on the screen:

Make an array of size 10 by 10. Fill it with numbers in order:

cpp{
  { 1,  2,  3,  4,  5},
  { 6,  7,  8,  9, 10},
  {11, 12, 13, 14, 15},
  {16, 17, 18, 19, 20},
  {21, 22, 23, 24, 25},
}

Given a number:

cppint num = 12345;

Double the digits in this number:

cpp1122334455

Given an array:

cpp{
  "123",
  "213",
  "321",
}

Replace the characters "1" with "0" in each line:

cpp{
  "023",
  "203",
  "320",
}