Category:Comparison Operations: Difference between revisions
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|-valign="top"|width="20%"|'''Operator'''|| '''Meaning''' | |-valign="top" | ||
|-valign="top"|width="20%"|'''='''||equal, | |width="20%"|'''Operator'''|| '''Meaning''' | ||
|-valign="top"|width="20%"|'''=='''||equal | |-valign="top" | ||
|-valign="top"|width="20%"|'''<>'''||not equal | |width="20%"|'''='''||equal (assignment), may also be used for comparisons in some situations | ||
|-valign="top"|width="20%"|'''<'''||less than | |-valign="top" | ||
|-valign="top"|width="20%"|'''<='''||less than or equal to | |width="20%"|'''=='''||equal (comparison) | ||
|-valign="top"|width="20%"|'''>'''||more than | |-valign="top" | ||
|-valign="top"|width="20%"|'''>='''||more than or equal to | |width="20%"|'''<>'''||not equal | ||
|-valign="top" | |||
|width="20%"|'''<'''||less than | |||
|-valign="top" | |||
|width="20%"|'''<='''||less than or equal to | |||
|-valign="top" | |||
|width="20%"|'''>'''||more than | |||
|-valign="top" | |||
|width="20%"|'''>='''||more than or equal to | |||
|} | |} | ||
===Example 1=== | |||
Consider the following example of how comparison operations may be used in a program: | Consider the following example of how comparison operations may be used in a program: | ||
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00110 if number1 <= number2 then print "number1 is less than or equal to number2" | 00110 if number1 <= number2 then print "number1 is less than or equal to number2" | ||
00120 if number1 >= number2 then print "number1 is more than or equal to number2" | 00120 if number1 >= number2 then print "number1 is more than or equal to number2" | ||
===Example 2 - Ilusetrate the difference between == and = === | |||
To illustrate the difference between == and =, look at the following program. You will see the values passed to the function from (A==B) and (A=B) are 0 and 7. (A==B) is a *comparison* and will return 1 or 0 for True or False, while (A=B) is a *assignment* and assigns A the value of B. | To illustrate the difference between == and =, look at the following program. You will see the values passed to the function from (A==B) and (A=B) are 0 and 7. (A==B) is a *comparison* and will return 1 or 0 for True or False, while (A=B) is a *assignment* and assigns A the value of B. | ||
Sample Program: | |||
A=5 | A=5 | ||
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pr 'a=';a;'b=';b;'c=';c | pr 'a=';a;'b=';b;'c=';c | ||
fn | fn | ||
Sample Results: | |||
a= 5 b= 7 c= 0 | a= 5 b= 7 c= 0 | ||
a= 7 b= 7 c= 7 | a= 7 b= 7 c= 7 | ||
Latest revision as of 17:30, 11 April 2018
Below is the list of comparison operators:
| Operator | Meaning |
| = | equal (assignment), may also be used for comparisons in some situations |
| == | equal (comparison) |
| <> | not equal |
| < | less than |
| <= | less than or equal to |
| > | more than |
| >= | more than or equal to |
Example 1
Consider the following example of how comparison operations may be used in a program:
00010 ! prompt user and read first number 00020 print "Enter first integer: " 00030 input number1 00040 ! prompt user and read second number 00050 print "Enter second integer: " 00060 input number2 00070 if number1 == number2 then print "number1 is equal to number2" 00080 if number1 <> number2 then print "number1 is not equal to number2" 00090 if number1 < number2 then print "number1 is less than number2" 00100 if number1 > number2 then print "number1 is more than number2" 00110 if number1 <= number2 then print "number1 is less than or equal to number2" 00120 if number1 >= number2 then print "number1 is more than or equal to number2"
Example 2 - Ilusetrate the difference between == and =
To illustrate the difference between == and =, look at the following program. You will see the values passed to the function from (A==B) and (A=B) are 0 and 7. (A==B) is a *comparison* and will return 1 or 0 for True or False, while (A=B) is a *assignment* and assigns A the value of B.
Sample Program:
A=5 B=7 fn_test(A,B,(A==B)) fn_test(A,B,(A=B)) en def fn_test(a,b,c) pr 'a=';a;'b=';b;'c=';c fn
Sample Results:
a= 5 b= 7 c= 0 a= 7 b= 7 c= 7
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