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strncmp

Compare first N characters of strings in Stateflow chart (case sensitive)

Since R2021b

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Syntax

tf = strncmp(str1,str2,n)

Description

tf = strncmp(str1,str2,n) compares the first n characters of str1 and str2. The operator returns 1 (true) if the strings are identical and 0 (false) otherwise.

example

Note

The operator strncmp is not supported in Stateflow® charts that use C as the action language. For similar functionality, use strcmp.

Examples

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Set x to 1 (true) because the first 13 characters in the strings match. Set y to 0 (false) because the first 14 characters in the strings do not match.

str1 = "Hello, world!";
str2 = "Hello, world!!!!!!!!!!!!";
x = strncmp(str1,str2,13);
y = strncmp(str1,str2,14);

Stateflow chart that uses the srtncmp operator in a state.

Input Arguments

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Input strings, specified as string scalars. Enclose literal string with double quotes.

Example: "Hello"

Number of characters checked, starting at the beginning of each string, specified as a positive integer.

Limitations

  • This operator does not support the use of Stateflow structure fields or messages. For more information about structures in Stateflow, see Access Bus Signals.

Version History

Introduced in R2021b

See Also

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