Perl | rand() Function

rand() function in Perl returns a random fractional number between 0 and the positive number value passed to it, or 1 if no value is specified. Automatically calls srand() to seed the random number generator unless it has already been called.

Syntax: rand(range_value)

Parameter:
range_value: a positive number to specify the range

Returns:
a random Floating point number between 0 and the specified value

Example 1:

#!/usr/bin/perl -w

# Calling the rand function
$random = rand(15);

# print the random number
# between 0 and 15
print("Random Number between 0 and 15: ",
                          $random, "\n");

Output:

Random Number between 0 and 15: 12.6694798049858

Example 2:

#!/usr/bin/perl -w

# Calling the rand function
# with negative value
$random = rand(-25);

# print the random number
# between 0 and -25
print("Random Number between 0 and -25: ",
                           $random, "\n");

Output:

Random Number between 0 and -25: -7.54296459674615