How to use strings in Rexx
Overview
In this shot, we’ll learn how to define a string and discuss the common methods used on a string in Rexx.
Syntax
To define a string, assign a string text to a variable name.
a = "We are learning rexx - strings”say a
Output
We are learning rexx - strings
Methods
Here some common methods used on a string in Rexx.
1. length(str)
You can use the length method to count the number of characters in a string.
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Parameters: A string or a reference variable.
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Return value: An integer that represents the number of characters in the string.
2. reverse(str)
You can use the reverse() method to return a reversed string.
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Parameters: A string or a reference variable.
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Return value: A string that is the reverse of the original string.
3. compare(str1,str2)
You can use the compare() method to compare two strings.
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Parameters:
str1: A string or reference variable.str2: Another string to comparestr1with.
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Return value:
0: The strings are equal.- Integer: The index of the first character that does not match between the strings.
Code
a = "Hello World"say length(a) /* 11 */say reverse(a) /* dlroW olleH */say compare(a, "Hello World") /* 0 */
The output of the code is as follows:
11
dlroW olleH
0
11 is the length of the string and dlroW olleH is the reverse of the string. 0 means that the strings are equal.
