TutorialsPoint
tutorialspoint.com › cprogramming › c_nested_loops.htm
Nested Loops in C
Nested for loops are very common. If both the outer and inner loops are expected to perform three iterations each, the total number of iterations of the innermost statement will be "3 * 3 = 9".
GeeksforGeeks
geeksforgeeks.org › c language › nested-loops-in-c-with-examples
Nested Loops in C - GeeksforGeeks
In the above program, the first loop will iterate from 0 to 5 but here if i will be equal to 3 it will break and will not print the * as shown in the output. Whenever we use a continue statement inside the nested loops it skips the iteration of the innermost loop only.
Published November 7, 2025
ScholarHat
scholarhat.com › home
Nested Loops in C - Types of Expressions in C ( With Examples )
The inner loop (j) iterates from 1 to the current value of i, printing numbers and spaces, while the outer loop (i) iterates from 1 to 5, regulating the number of rows. As a result, there is a pattern of numerals rising in each row, with a newline character between each row. ... The nested while loop in C programming offers immense control and flexibility when solving multifaceted problems by allowing a programmer to place one loop inside another...
Published July 31, 2025
What is the difference between a single loop and a nested loop in C?
A single loop iterates over a sequence or range of values once, whereas a nested loop involves multiple loops, one inside the other. Each iteration of the outer loop triggers a complete execution of the inner loop. Nested loops are particularly useful for tasks that involve two or more dimensions, such as working with 2D arrays or printing complex patterns.
upgrad.com
upgrad.com › home › tutorials › software & tech › nested loop in c
Nested Loop in C: A Complete Guide for Programmers
What are the common mistakes when using nested loops in C?
Some common mistakes include forgetting to update the inner loop variables, leading to infinite loops, or incorrectly placing break statements. Another mistake is using excessive nested loops when fewer loops could achieve the same result, leading to inefficiency. Additionally, improper loop conditions or incorrect loop bounds can lead to incorrect results or performance issues.
upgrad.com
upgrad.com › home › tutorials › software & tech › nested loop in c
Nested Loop in C: A Complete Guide for Programmers
Can nested loops be used with any type of loop in C?
Yes, nested loops in C can be implemented using any type of loop — `for`, `while`, or `do-while`. The most common use is with `for` loops, where both the outer and inner loops iterate over a range of values. While loops or do-while loops can also be nested, but they are less commonly used for these purposes.
upgrad.com
upgrad.com › home › tutorials › software & tech › nested loop in c
Nested Loop in C: A Complete Guide for Programmers
Upgrad
upgrad.com › home › tutorials › software & tech › nested loop in c
Nested Loop in C: A Complete Guide for Programmers
April 22, 2025 - Let’s break it down by type, with detailed examples, outputs, and analysis. The most commonly used structure for a nested loop in C is a pair of `for` loops.
W3Schools
w3schools.com › c › c_for_loop_nested.php
C Nested Loops
It is also possible to place a loop inside another loop. This is called a nested loop.
Unstop
unstop.com › home › blog › nested loop in c | all types, break & continue (+examples)
Nested Loop In C | All Types, Break & Continue (+Examples)
June 11, 2024 - A nested loop is when you have loops within loops, sort of like fitting a piece of code inside another. We will explore the three types of nested loops, i.e., for, while, and do-while, along with some best practices to consider when working ...
CSE Department
cse.poriyaan.in › topic › nested-loops-50326
Nested Loops - with Example C Programs - CSE Department
C allows its users to have nested loops, i.e., loops that can be placed inside other loops. Although this feature will work with any loop like while, do-while, and for, it is most commonly used with the for loop, because this is easiest to control.
Medium
medium.com › geekculture › c-code-beginners-practice-9c4204925feb
C Beginners, Nested For Loops. More C code beginners exercise with… | by Naomi Fridman | Geek Culture | Medium
November 14, 2021 - Bellow is a simple example, you can play around with to understand the nesting: for (i=1; i <=n ; i++) { printf("\n"); for (j=1; j <=i ; j++) { printf(" %d", j); } } ... for (i=1; i <=n ; i++) { printf("\n ** starting outer loop i = %d \n ", ...
Ankitweblogic
ankitweblogic.com › c › exerciseonnestedloop.php
C Exercise | Nested Loop
QuQuestion-Answer · Try to generate the following series program using Nested Loop: 1 12 123 1234 12345 C C# 12345 1234 123 12 1 C · 1 22 333 4444 55555 · 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1 C · 5 4 3 2 1 5 4 3 2 5 4 3 5 4 5 C · 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 C ·
DataFlair
data-flair.training › blogs › nested-for-loop-in-c
Nested For Loop in C with Examples - DataFlair
January 3, 2024 - A nested for loop is a loop nested inside another for loop. The inner loop runs in its entirety during each iteration of the outer loop.
WsCube Tech
wscubetech.com › resources › c-programming › nested-loops
Nested Loops in C Programming (With Examples)
March 12, 2026 - Learn in this tutorial about nested loops in C with examples. Understand how loops inside loops work to solve complex problems efficiently. Read now!
Codeforwin
codeforwin.org › home › nested loops in c programming
Nested loops in C programming - Codeforwin
July 20, 2025 - In train there are n compartments and each compartment has m seats. Ticket checker will check ticket for each passenger for each compartment. You can write the above statement in programming as. for each compartment in compartments { for each seat in compartment { check ticket of passenger on seat } } Such situations in C programming are handled using nested loops.
EMB Blogs
blog.emb.global › home › emerging-tech › nested loops in c programming: examples and use cases
Nested Loops in C Programming: Examples and Use Cases
July 8, 2024 - For example, if the outer loop runs ten times and the inner loop runs five times, the inner loop will execute a total of fifty times. This structure is useful for tasks that require multiple levels of repetition, such as iterating through multi-dimensional arrays or generating combinations of elements. Nested loops are particularly useful when dealing with problems that require multi-dimensional iteration.
DataFlair
data-flair.training › blogs › c-programming-tricky-interview-questions-for-loop-part-2
C Programming Tricky Interview Questions For for Loop Part-2 - DataFlair
November 8, 2023 - This article covered some of the common and tricky interview questions on for loops like nesting loops, infinite loops, loop control, optimization, patterns, and comparison with recursion in C.
Programtopia
programtopia.net › home › c programming › nested loop in c
Nested loop in C - Programtopia
January 15, 2021 - A loop inside another loop is called a nested loop. The depth of nested loop depends on the complexity of a problem. We can have any number of nested loops as required. Consider a nested loop where the outer loop runs n times and consists of ...
Scaler
scaler.com › home › topics › nested loops in c with examples
Nested Loops in C with Examples - Scaler Topics
October 13, 2023 - Nested Loop refers to a loop within a loop, as the name implies. Within a loop, there can be any number of loops. We're all familiar with looping conditions such as for, while, and do-while. To create nested loops, we can loop multiple types of loops within one other.
Vaia
vaia.com › nested loops in c
Nested Loops in C: Definition & Example | Vaia
In programming with C, a nested loop is simply a loop inside the body of another loop. The outer loop runs its code block repeatedly, and each iteration of the outer loop triggers the full execution of the inner loop. This means the inner loop will execute completely multiple times, once for ...
Top answer 1 of 3
2
Why you use while loops? Always use for loops when you know the number of iteration. You know the number of iterations, because you set it as an input.
So you can rewrite your code to this (based on the rare information you give and without input check):
#include <stdio.h>
int main(void)
{
int Input;
printf("Enter a value: ");
scanf("%d", &Input);
for(int i = 0; i < Input; i++)
{
for(int j = 0; j <= Input; j++)
{
printf("%d %d\n", i, j);
}
}
return 0;
}
Or with while loops (bad style)
#include <stdio.h>
int main(void)
{
int i = 0;
int j = 0;
int Input;
printf("Enter a value: ");
scanf("%d", &Input);
while(i < Input)
{
j = 0;
while(j <= Input)
{
printf("%d %d\n", i, j);
j++;
}
i++;
}
return 0;
}
Both ways gives you the following output:
Enter a value: 2
0 0
0 1
0 2
1 0
1 1
1 2
2 of 3
0
Although I do not know why you code like this, the working code is following.
#include <stdio.h>
int main(){
int x = 2;
int a = 0, b = 0;
loop:while( a < x )
{
while(b <= x) {
printf("%d %d\n", a, b);
b++;
}
++a;
b = 0;
goto loop;
}
return 0;
}
Intellipaat
intellipaat.com › home › blog › nested loops in c and c++
Nested Loops in C and C++: Syntax, Execution, and Examples
October 29, 2025 - ... As we know, a nested loop is a loop inside a loop. There are two loops; the loop that contains another loop is called the outer loop, and the loop that is inside is called the inner loop.