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Welcome to the Prime Number in Tcl page! Here, you'll find the source code for this program as well as a description of how the program works.
package require Tcl 8.6
package require math::numtheory
proc usage {} {
puts stderr {Usage: please input a non-negative integer}
exit 1
}
proc isNonNegativeInteger {s} {
if {[catch {expr {int($s)}} n]} {
return 0
}
if {$s eq ""} { return 0 }
if {![string is integer -strict $s]} {
return 0
}
return [expr {$n >= 0}]
}
if {$argc != 1} { usage }
set input [string trim [lindex $argv 0]]
if {![isNonNegativeInteger $input]} { usage }
set n $input
if {$n < 2} {
puts "composite"
} elseif {[math::numtheory::isprime $n]} {
puts "prime"
} else {
puts "composite"
}
Prime Number in Tcl was written by:
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