not displaying answers in command window for this special command

for not displaying answers in command window for eval(rrr) , eval(ttt) what i must do?

iterval1='444444';
 d=sprintf('m%d',1);
 c=sprintf('m%d_%d',1,2);
 rr=eval(iterval1(1,1:3));
 tt=eval(iterval1(1,5:end));
 rrr =sprintf('%s=%d',d,rr);
 ttt=sprintf('%s=%d',c,tt);
 eval(rrr); % what must i do to not displaying this in command widow
 eval(ttt);  % what must i do to not displaying this in command widow

[Oleg Komarov]

Are you trying to create variables in a loop? Don't do it with eval.

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

Answer 1

[Fangjun Jiang]

Make

rrr=[rrr,';'];
eval(rrr);

Answer 2

[Walter Roberson]

evalc(rrr);    %evalc() to "capture" the result of eval(), then semi-colon means throw it away without displaying it

[Fangjun Jiang]

+1, nice to know! Never paid attention!

[mohammad]

really nice