Enter your address in https://etherscan.io/ and copy the uppercase/lowercase checksummed version and paste it into your solidity code.

contract Sample { address constant public myAddress = 0xE0f5206BBD039e7b0592d8918820024e2a7437b9; uint public vari; function setVari(uint a) { if(msg.sender == myAddress) { vari = a; } } } 

And the warning message will disappear.

But I just checked your code in Remix and I get a new warning message:

Untitled4:4:39: Warning: Initial value for constant variable has to be compile-time constant. This will fail to compile with the next breaking version change. address constant public myAddress = 0xE0f5206BBD039e7b0592d8918820024e2a7437b9; ^----------------------------------------^ 

Enter your address in https://etherscan.io/ and copy the uppercase/lowercase checksummed version and paste it into your solidity code.

contract Sample { address constant public myAddress = 0xE0f5206BBD039e7b0592d8918820024e2a7437b9; uint public vari; function setVari(uint a) { if(msg.sender == myAddress) { vari = a; } } } 

And the warning message will disappear. The compiler checks the checksummed address for validity.

But I just checked your code with the checksummed address in Remix and I get a new warning message:

Untitled4:4:39: Warning: Initial value for constant variable has to be compile-time constant. This will fail to compile with the next breaking version change. address constant public myAddress = 0xE0f5206BBD039e7b0592d8918820024e2a7437b9; ^----------------------------------------^ 

This second error will disappear if you remove the constant modifier.

Enter your address in https://etherscan.io/ and copy the uppercase/lowercase checksummed version and paste it into your solidity code.

contract Sample { address constant public myAddress = 0xE0f5206BBD039e7b0592d8918820024e2a7437b9; uint public vari; function setVari(uint a) { if(msg.sender == myAddress) { vari = a; } } } 

And the warning message will disappear.

Enter your address in https://etherscan.io/ and copy the uppercase/lowercase checksummed version and paste it into your solidity code.

contract Sample { address constant public myAddress = 0xE0f5206BBD039e7b0592d8918820024e2a7437b9; uint public vari; function setVari(uint a) { if(msg.sender == myAddress) { vari = a; } } } 

And the warning message will disappear.

But I just checked your code in Remix and I get a new warning message:

Untitled4:4:39: Warning: Initial value for constant variable has to be compile-time constant. This will fail to compile with the next breaking version change. address constant public myAddress = 0xE0f5206BBD039e7b0592d8918820024e2a7437b9; ^----------------------------------------^