1.What are the different ways to initialize a variable. How to differentiate g

1.What are the different ways to initialize a variable. How
to differentiate global and local variables, explain it
through a simple tcl program.

2.Create a list of week days and print the first and last
character of each day using foreach command

3.Can you write a small program to verify the given input is
file or directory.Before checking, just ensure that the
file/dir exists or not in the given path. If the given
input is a file, findout the size and verify that the file
has all read ,write and execute permission.

Question Posted / pranavi

3 Answers
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1.What are the different ways to initialize a variable. How to differentiate global and local vari..

Answer / devendra singh bhadoriya

2. % set days {monday tuesday wednasday thursday friday
saturday sunday}
monday tuesday wednasday thursday friday saturday sunday
% foreach day $days {
set str [split $day ""]
puts "[lindex $str 0]"
puts "[lindex $str end]"
}

Is This Answer Correct ?

17 Yes

6 No

1.What are the different ways to initialize a variable. How to differentiate global and local vari..

Answer / basavaraj

1.
a. Initializing using
set x 10
lappend y 13

b. Initializing using out put of an expression
set z [expr $x + $y ]

c . Initializing using a list
set m [list $x $y $z]

Is This Answer Correct ?

2 Yes

0 No

1.What are the different ways to initialize a variable. How to differentiate global and local vari..

Answer / amirtha

Ans for 3rd Question:
input is filename
if {file exists filename} {
set dir [ file isdirectory filename]
if {$dir == 1} { puts "filename is directory"
} else {
set fil [ file isfile filename]
set size [file size filename ]
puts "filename is file of size
file readable filename ;#to check file is readable by current user
file owned filename ;#to check file is owned by current user
file writable filename ;#to check file is writable by current user
}

Is This Answer Correct ?

1 Yes

0 No

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