Nested Loops in MATLAB

Loop Statements in Matlab

MATLAB allows a loop to be used within another loop. The following section shows some examples to illustrate this concept.

Syntax

The syntax for nested for loop statements in MATLAB is as follows-

for m =　1:j
　　　for n =　1:k
　　　　　　<statements>;
　　　end
end

The syntax for nested while loop statements in MATLAB is as follows-

while <expression1>
　　　while <expression2>
　　　　　　<statements>
　　　end
end

Online Examples

Let's use nested for loops to display from1to10Create a script file and enter the following code to find all prime numbers of 0-

for i =　2:100
　　　for j =　2:100
　　　　　　if(~mod(i,j))　
　　　　　　　　　break; % If a factor is found, it is not a prime number
　　　　　　end　
　　　end
　　　if(j > (i/j))
　　　　　　fprintf('%d is prime\n', i);
　　　end
end

When running the file, it displays the following result-

2　is prime
3　is prime
5　is prime
7　is prime
11　is prime
13　is prime
17　is prime
19　is prime
23　is prime
29　is prime
31　is prime
37　is prime
41　is prime
43　is prime
47　is prime
53　is prime
59　is prime
61　is prime
67　is prime
71　is prime
73　is prime
79　is prime
83　is prime
89　is prime
97　is prime

Loop Statements in Matlab