Question

can anyone say the concept of nested loops?

Answer 1

when one loop is fitted in a loop it is called nested loop

Answer 2

The placing of one loop inside the body of another loop is called nesting. When you "nest" two loops, the outer loop takes control of the number of complete repetitions of the inner loop. While all types of loops may be nested, the most commonly nested loops are for loops.

HOPE IT HELPS.