c# equivalent of statement

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Hi,

Following code is in C++. What would be C# Equivalent Code for this.

C#

int lGpiValue = 512;
int sensor=3;

if( lGpiValue & (1<<sensor))  // What will be in c#
return 1;

Please help.

Posted 17-Dec-14 16:50pm

HMAHIDA

Updated 21-Dec-14 3:29am

Snesh Prajapati

v2

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George Jonsson · Accepted Answer · 2014-12-17T17:04:00

Solution 1

In c# you need an explicit boolean expression in an if-statement.
So you need to compare the result of lGpiValue & (1 << sensor) with a value.
For example:

C#

int lGpiValue = 512;
int sensor = 3;

if ((lGpiValue & (1 << sensor)) != 0) // The exact comparison is for the OP to decide
    return 1;

// Alternative comparison
if (Convert.ToBoolean(lGpiValue & (1 << sensor)))
    return 1;

Posted 17-Dec-14 17:04pm

George Jonsson

Updated 21-Dec-14 2:51am

v4

Comments

Philippe Mori 20-Dec-14 18:04pm

It should be !=0. Your code might fail if sensor is 31 and lGpiValue is negative. Or you have to use unsigned numbers.

George Jonsson 20-Dec-14 22:31pm

You have a good point, but I merely presented an example.
I changed the code as you suggested.

Philippe Mori 21-Dec-14 8:20am

!= 0... Not 1.
Either, you should give an "unrelated" example or give equivalent code as otherwise OP might think that the code can be used as it... Or put a comment to indicate that it might not be exact.

George Jonsson 21-Dec-14 8:33am

Thanks. The hamsters were there again. ;)

Kornfeld Eliyahu Peter 21-Dec-14 8:38am

Maybe Convert.ToBoolean will work better than compare to 0...

George Jonsson 21-Dec-14 8:52am

Thanks. I added an alternative if statement according to your suggestion.