5.20. Strings - Double quoted

print "normal string";               # normal string
print "two\nlines";                  # two
                                     # lines
print "another 'string'";            # another 'string'
         
my $name = "Foo";
print "Hello $name, how are you?";   # Hello Foo, how are you?

print "His "real" name is Foo";      # ERROR
print "His \"real\" name is Foo";    # His "real" name is Foo

  
print "His \"real\" name is \"$name\"";  # His "real" name is "Foo"
print qq(His "real" name is "$name");    # His "real" name is "Foo"

print qq(His "real" name is ($name));    # His "real" name is (Foo)
print qq{His "real" name is ($name)};    # His "real" name is (Foo)

In double quoted strings you can use the following:

Backslash escapes sequences like \n \t 
see in perldoc perlop
Variable interpolation