Multiplying all columns in dataframe by single column

Question

I know it is a basic quaestion but couldnt find any solution to it. I want to multiply all columns of a dataframe by single column.

df1<-data.frame(F1=c(1         


        

Answer 1

The overkill dplyr solution

library(dplyr)

df1 %>%
  mutate_all(.,function(col){C$C*col})