12,754,334 members (28,485 online)
Rate this:
See more:
Why we need nested loop and what is its purpose
Posted 23-Nov-12 23:42pm
ALIWAZ407

Rate this:

## Solution 2

You use a nested loop for a lot of reasons: Think about it in real life.
When you read a book, you are using a loop:
```foreach page in book
{
}```
But reading a page involves a loop as well:
```foreach line in page
{
}```
And to read a line, you need to read each word. and for each word, you need to read each character.

Computing is the same: you want to do a task, which needs you to loop through items. Each item needs further processing which requires you to loop though smaller portions.

```for (i = 0; i < linesCount; i++)
{
char* line = lines[i];
for (j = 0; j < line.Length; j++)
{
// Do somethign with each character of the line
}
}```
Nelek 24-Nov-12 5:40am

The power of simplicity. +5
Mohibur Rashid 24-Nov-12 9:16am

Albert Holguin 25-Nov-12 1:06am

Excellent answer Griff +5
Mohd Imran Saifi 25-Nov-12 2:09am

Nice Example
Rate this:

## Solution 3

As an example, you might find nested loops useful for creating a table:
```  int table[10][10];
for (i=1; i<=10; i++)
for (j=1; j<=10; j++)
table[i][j] = i*j;
```

The above `C` code creates the classical school multiplication table.
Rate this:

## Solution 1

There is the lots of thing where we need to use nested loop... try the different sorting algorithm in c, c++ in which u must have to use nested loop.
In matrix multiplication also u have to use nested loop.
in short.. you can implement nested loop as per your need.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Top Experts
Last 24hrsThis month
 Graeme_Grant 255 ppolymorphe 171 Maciej Los 170 Peter Leow 160 Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 150
 OriginalGriff 3,971 Peter Leow 3,051 Karthik Bangalore 2,375 ppolymorphe 2,373 Richard MacCutchan 1,594

Advertise | Privacy | Mobile
Web02 | 2.8.170217.1 | Last Updated 24 Nov 2012