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ischar

Determine if input is character array

Syntax

tf = ischar(A)

Description

example

tf = ischar(A) returns logical 1 (true) if A is a character array and logical 0 (false) otherwise.

Examples

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Create different arrays, and then determine if they are character arrays.

Test a character vector.

chr = 'Mary Jones'
chr = 
'Mary Jones'
tf = ischar(chr)
tf = logical
   1

Test a numeric array.

X = rand(1,3)
X = 

    0.8147    0.9058    0.1270

tf = ischar(X)
tf = logical
   0

Test a string array. Starting in R2017a, you can create strings using double quotes instead of the string function.

str = ["Smith","Chung","Morales"; ...
       "Sanchez","Peterson","Adams"]
str = 2x3 string array
    "Smith"      "Chung"       "Morales"
    "Sanchez"    "Peterson"    "Adams"  

tf = ischar(str)
tf = logical
   0

str is a string array, not a character array, so ischar returns 0.

Input Arguments

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Input array, specified as a scalar, vector, matrix, or multidimensional array. A can be any data type.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Introduced before R2006a

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