gawk: lintplus3.awk:1: warning: `typeof' is a gawk extension
3 strnum strnum
strnum strnum 3
gawk: lintplus3.awk:1: (FILENAME=- FNR=2) warning: operator `+' used on two string values
0 string string
gawk: lintplus3.awk:2: (FILENAME=- FNR=2) warning: operator `+' used on two string values
string string 0
