What is nested loop?

  • A nested loop is a loop which is itself inside another loop. There is an inner loop withing the body of an outer loop.
  • For example:
    • CLS
      FOR i = 1 TO 5
          FOR j = 1 TO 3
              PRINT j;
          NEXT j
          PRINT
      NEXT i
      END
  •  Rule for nested loop.
    •  An outer loop and inner loop cannot have the same control variable.
    • The inner loop must terminate before the outer loop.
    • The inner loop must be completely nested inside the body of the outer loop.
    • Outer loop is opened at first and closed at last.

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