# Perl Numeric Equality Operators Example

These are also called relational operators. Assume variable \$a holds 10 and variable \$b holds 20 then, lets check the following numeric equality operators −

OperatorDescriptionExample
== Checks if the value of two operands are equal or not, if yes then condition becomes true.(\$a == \$b) is not true.
!= Checks if the value of two operands are equal or not, if values are not equal then condition becomes true.(\$a != \$b) is true.
<=> Checks if the value of two operands are equal or not, and returns -1, 0, or 1 depending on whether the left argument is numerically less than, equal to, or greater than the right argument.(\$a <=> \$b) returns -1.
> Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true.(\$a > \$b) is not true.
< Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true.(\$a < \$b) is true.
>= Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true.(\$a >= \$b) is not true.
<= Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true.(\$a <= \$b) is true.

## Example

Try the following example to understand all the numeric equality operators available in Perl. Copy and paste the following Perl program in test.pl file and execute this program.

```#!/usr/local/bin/perl

\$a = 21;
\$b = 10;

print "Value of \\$a = \$a and value of \\$b = \$b\n";

if( \$a == \$b ){
print "\$a == \\$b is true\n";
}else{
print "\\$a == \\$b is not true\n";
}

if( \$a != \$b ){
print "\\$a != \\$b is true\n";
}else{
print "\\$a != \\$b is not true\n";
}

\$c = \$a <=> \$b;
print "\\$a <=> \\$b returns \$c\n";

if( \$a > \$b ){
print "\\$a > \\$b is true\n";
}else{
print "\\$a > \\$b is not true\n";
}

if( \$a >= \$b ){
print "\\$a >= \\$b is true\n";
}else{
print "\\$a >= \\$b is not true\n";
}

if( \$a < \$b ){
print "\\$a < \\$b is true\n";
}else{
print "\\$a < \\$b is not true\n";
}

if( \$a <= \$b ){
print "\\$a <= \\$b is true\n";
}else{
print "\\$a <= \\$b is not true\n";
}
```

When the above code is executed, it produces the following result −

```Value of \$a = 21 and value of \$b = 10
\$a == \$b is not true
\$a != \$b is true
\$a <=> \$b returns 1
\$a > \$b is true
\$a >= \$b is true
\$a < \$b is not true
\$a <= \$b is not true
```

perl_operators.htm