search for: citizentype

I have a variable that identifies citizen type but some of my rows are blank. I want to replace the blank entries with the correct value which is conditional on another variable. In SAS, my conditional statement would be as follow: if citizenType="" and primarylanguage="English" then citizenType ="US citizen"; else citizenType=citizenType; When I try to duplicate this conditional statement in R I get the following error: Will you show me the correct syntax? social$CitizenType<-if(social$CitizenType=="&...