# exrs1.r  example print   string,  integer,  float 
print("R exrs1.r running")
str="my string"
print(str)
n=13
print(n)
cat("n=",n,"\n") # optional and redundant, see output
x=37.95e+20
print("x=") # only one item allowed
print(x)
cat("x=",x,"\n") # many items separated by commas
print(paste("x=",x), quote=FALSE) # do not print quote character
print("exrs1.r finished")