Tcl - Arithmetic Operators


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Following table shows all the arithmetic operators supported by Tcl language. Assume variable ‘A’ holds 10 and variable ‘B’ holds 20, then −

Operator Description Example
+ Adds two operands A + B will give 30
- Subtracts second operand from the first A - B will give -10
* Multiplies both operands A * B will give 200
/ Divides numerator by de-numerator B / A will give 2
% Modulus Operator and remainder of after an integer division B % A will give 0

Example

Try the following example to understand all the arithmetic operators available in Tcl language −

#!/usr/bin/tclsh

set a 21
set b 10
set c [expr $a + $b]
puts "Line 1 - Value of c is $c\n"
set c [expr $a - $b]
puts "Line 2 - Value of c is $c\n"
set c [expr $a * $b]
puts "Line 3 - Value of c is $c\n"
set c [expr $a / $b]
puts "Line 4 - Value of c is $c\n"
set c [expr $a % $b]
puts "Line 5 - Value of c is $c\n"

When you compile and execute the above program, it produces the following result −

Line 1 - Value of c is 31

Line 2 - Value of c is 11

Line 3 - Value of c is 210

Line 4 - Value of c is 2

Line 5 - Value of c is 1
tcl_operators.htm
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