Question

What are nested loops??​

Answer 1

Answer:

A nested loop is a loop within a loop, an inner loop within the body of an outer one. How this works is that the first pass of the outer loop triggers the inner loop, which executes to completion. Then the second pass of the outer loop triggers the inner loop again. This repeats until the outer loop finishes. Of course, a break within either the inner or outer loop would interrupt this process

Answer 2

Explanation:

A nested loop is a loop within a loop, an inner loop within the body of an outer one. How this works is that the first pass of the outer loop triggers the inner loop, which executes to completion. Then the second pass of the outer loop triggers the inner loop again. This repeats until the outer loop finishes. Of course, a break within either the inner or outer loop would interrupt this process..

Example 11-20. Nested Loop

#!/bin/bash

# nested-loop.sh: Nested "for" loops.

outer=1 # Set outer loop counter.

# Beginning of outer loop.

for a in 1 2 3 4 5

do

echo "Pass $outer in outer loop."

echo "---------------------"

inner=1 # Reset inner loop counter.

# ===============================================

# Beginning of inner loop.

for b in 1 2 3 4 5

do

echo "Pass $inner in inner loop."

let "inner+=1" # Increment inner loop counter.

done

# End of inner loop.

# ===============================================

let "outer+=1" # Increment outer loop counter.

echo # Space between output blocks in pass of outer loop.

done

# End of outer loop.

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