Demonstration of String Length Functions

This script illustrates the differences between the functions `length` (length without trailing blanks), `lengthn` (similar to length but returns 0 for missing values), `lengthc` (variable storage length) and `lengthm` (allocated memory).

Data Analysis

Type : CREATION_INTERNE

Data is generated directly in the code via a DATALINES statement.

1 Code Block

DATA STEP Data

Explanation :
Creation of the LENGTH_DATA table. Reads a 30-character string and calculates its length using different functions (length, lengthn, lengthc, lengthm).

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1	DATA LENGTH_DATA;
2	INPUT a $CHAR30.;
3	b=LENGTH(a);
4	c=lengthn(a);
5	d=lengthc(a);
6	e=lengthm(a);
7	DATALINES;
8	Pra deep Sathyamurthy
9	;

2 Code Block

PROC PRINT

Explanation :
Display of results to compare the values returned by the different length functions.

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1	PROC PRINT;
2	var a b c d e;
3	RUN;
4	QUIT;

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