**blanks**

Returns a string which consists of`n`spaces.**char**

Returns a string matrix whose elements are the input arguments, vertically concatenated.**contains**

Searches for pattern,`pat`, in the input,`src`, and returns`true`if`pat`is found.**deblank**

Trims trailing whitespaces from strings, matrices and cell arrays. For matrices, trailing whitespaces are stripped from each row to the size of the longest string in the matrix, to make the length of each row consistent.**func2str**

Returns a string containing the name of the function`f`.**ischar**

Returns`true`if the input,`s`, is a string and`false`otherwise.**isletter**

Returns a boolean, logical matrix or cell array, whose value(s) are`true`if the corresponding elements of the input are letters and`false`, if otherwise.**isspace**

Returns a boolean, logical matrix or cell array, whose value(s) are`true`if the corresponding elements of the input are whitespaces and`false`, if otherwise.**isstr**

Returns`true`if the input,`s`, is a string and`false`otherwise.**lower**

Returns a string or cell array where each uppercase character of the input string, matrix or cell array is replaced by the corresponding lowercase character. Non-alphabetic characters in the input are not modified.**mat2str**

Writes the values of a 2D matrix,`m`, to a string,`R`.**num2str**

Returns a string or a string array after converting the input`x`. Input`x`can be a scalar, complex number, or matrix. An optional argument,`precision`, can be used to format the output,`R`, by specifying the number of significant digits. Valid values of`R`are positive integers.**regexp**

Returns the results after searching for the regular expression or pattern,`pattern`, in the input,`s`.**regexprep**

Returns the result after replacing the regular expression,`pat`with`rep`in the input,`src`.**sprintf**

Returns a formatted string, based on the format,`strformat`specified.**sscanf**

Returns result R after reading a formatted string`s`, specified by template`t`.**str2double**

Returns a scalar, complex number or matrix, R, after converting the input`s`.**str2func**

Returns the function handle corresponding to the input string argument`s`. If an optional second argument called`global`is given, only global functions are included in the scope of the lookup.**str2mat**

Returns a string matrix,`R`, whose elements are inputs,`s`, vertically concatenated. Strings that form the rows`R`are padded with spaces so that`R`is valid.**str2num**

Returns a scalar, complex number or matrix, R, after converting the input`s`.**strcat**

Concatenates inputs`s, ...`and returns the result, R, which is of type string or cell array.**strcmp**

Performs a case-sensitive comparison of`x1`with`x2`. Returns`1`if the characters compared are identical and`0`otherwise.**strcmpi**

Performs a case-insensitive comparison of`x1`with`x2`. Returns`1`if the characters compared are identical and`0`otherwise.**strfind**

Searches for all instances of the pattern`pat`in`s`. Returns a matrix, R, whose elements are indices of occurrences of`pat`in`s`.**strip**

Trims leading and trailing characters from strings.**strjoin**

Returns a string, R, which is the result of concatenating the elements of the cell array of strings,`c`, with each element separated by the delimiter`delim`. Delimiter`delim`is optional and if no value is specified, whitespace is used.**strncmp**

Performs a case-sensitive comparison of the first`n`characters of`x1`with`x2`. Returns`1`if the characters compared are identical and`0`otherwise.**strncmpi**

Performs a case-insensitive comparison of the first`n`characters of`x1`with`x2`. Returns`1`if the characters compared are identical and`0`otherwise.**strrep**

Searches and replaces all instances of the pattern`pat`in`s`with the new pattern`newpat`. The output R will be a string or a cell of strings, based on the type of`s`.**strsplit**

Tokenizes the string`s`with the given delimiter`delim`.**strtok**

Splits the string`s`at the given delimiter`delim`and returns a cell array whose elements are the substrings of string`s`.**strtrim**

Trims leading and trailing whitespaces from strings, matrices and cell arrays. For matrices, leading and trailing whitespaces are stripped from each row to the size of the longest string in the matrix, to make the length of each row consistent.**strvcat**

Returns a string matrix whose elements are the input arguments, vertically concatenated.**toascii**

Converts every character in the string,`s`, to its ASCII equivalent.**tolower**

Returns a string or cell array where each uppercase character of the input string, matrix or cell array is replaced by the corresponding lowercase character. Non-alphabetic characters in the input are not modified.**toupper**

Returns a string or cell array where each lowercase character of the input string, matrix or cell array is replaced by the corresponding uppercase character. Non-alphabetic characters in the input are not modified.**upper**

Returns a string or cell array where each lowercase character of the input string, matrix or cell array is replaced by the corresponding uppercase character. Non-alphabetic characters in the input are not modified.