sum of macro variables

[VISHNU239]

Hi, I have two macro variables &a and &b. I have to sum these two macro variables and assign it to other macro variable name &c. How do I do that? Please help me.

[Kurt_Bremser]

Use %eval:

%let c = %eval(&a+&b);

[LinusH]

Take a look at %eval.

[PaigeMiller]

%eval works only on integers. If &b has a value of 7.5, you get an error. In that case, you could use %sysevalf

but you'd still be better off doing anything more advanced than integer arithmetic in a data step

[VISHNU239]

a and b will have decimal values too. can you help me  the statement for that part too?

[Reeza]

He did, %SYSEVALF. 

[PaigeMiller]

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@VISHNU239 wrote:

a and b will have decimal values too. can you help me  the statement for that part too?

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Do the math in a data step

[novinosrin · Accepted solution]

%let a=1.4;
%let b=1.6;

%let c=%sysevalf(&a+&b);

%put  &=c;

[VISHNU239]

Thanks guys. it worked.