[R Survey Analysis] Problem counting number of responses

M
?y dataset includes a survey completed by research participants to evaluate
quality of life. A few things regarding the survey:


   -
*not all questions must be answered? for the total score *
   - questions left blank are coded as "0"
   - ?the number of questions answered must be determined in order to
   compute the total score


*Sample Code?*

q1 <- ifelse(is.na(survey, 0, survey$q1)

q2 <- ifelse(is.na(survey, 0, survey$q2)

q3 <- ifelse(is.na(survey, 0, survey$q3)

survey$sum.survey <- q1 + q2 + q3

survey$responses <- # HELP ?????

*> # HELP PART 1 ------------------------------*
*> # need help determining number of questions the respondents answered*

*# HELP PART 2 -------------------------------*

*> # I want to look at the subset of the population that completed all the
questions*


?
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?Thanks for your help!! It means a lot? :)