如何在sas中计算加法和减法

Question

How to calculate this below下面如何计算

Used below formula in Microsoft excel在 Microsoft excel 中使用以下公式

   C = col1-col2- col3 + col4

I used below logic to convert above formula into SAS我使用以下逻辑将上述公式转换为 SAS

   C1 = col1-col2
   C2 = sum(col3,col4)
   C1= C1-C2

Still not able to match value with Microsoft excel output仍然无法将值与 Microsoft excel 输出匹配

Answer 1

You just need to wrap it in a datastep:你只需要将它包装在一个数据步骤中：

data new_data;
   set old_data;
   C = col1 - col2 - col3 + col4;
run;