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warning: multi-character character constant [message #872222]

Tue, 15 May 2012 13:43

Ramkumar Sivaraman
Messages: 3
Registered: May 2012

Junior Member

Hello
I am getting this warning,
warning: multi-character character constant

I know why I am getting this error, since I am comparing an integer to a two letter string constant in single quotes,

#define CMD_ID 'ID'
int iCommand;

switch(iCommand)
{
case CMD_ID: // warning: multi-character character constant
break;
}

But I cannot modify the code to prevent as that leads to many changes. Rather I want to suppress the warning. How can I do it in eclipse IDE or inside the code? My program is in C in Linux.

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Re: warning: multi-character character constant [message #872524 is a reply to message #872222]

Wed, 16 May 2012 05:14

Harry Houdini
Messages: 131
Registered: February 2010

Senior Member

You can't do this in C.

The switch instruction can compare only integers. A single character can be converted in an integer, but not more.

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