HP Pascal/iX Reference Manual (31502-90022)

Table Of Contents

3- 27

String Assignment Compatibility

Certain restrictions apply to the assignment of string literals or

variables of the type string, PAC, or char. These restrictions are

listed below.

* If T1 is a string variable, T2 must be a string variable or a

string literal whose length is equal to or less than the maximum

length of T1. T2 cannot be a PAC or char variable. Assignment

sets the current length of T1.

* If T1 is a PAC variable, T2 must be a PAC or a string literal

whose current length is less than or equal to the length of T1.

T1 is blank filled if T2 is a string literal or PAC that is

shorter than T1. T2 cannot be a string or a char variable.

* If T1 is a char variable, T2 may be a char variable or a string

literal with a single character. T2 cannot be a string or PAC

variable.

Table 3-1 summarizes these rules. The standard function

strmax(s)

returns the maximum length of the

string

s. The standard function

strlen(s)

returns the current length of the

string

s or the number of

characters in the PACs.

String constants

are considered string literals when they appear on the

right side of an assignment statement. Any string operation on two

string literals, such as the concatenation of two string literals,

results in a string of type string.

Table 3-1. String, PAC, and String Literal Assignment

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