awk - awk concatenate string variable

Question

I would like to awk concatenate string variable in awk. How can I do that? I tried:

BEGIN{
t="."
r=";"
w=t+r
print w}

But I does't work. Output:

Or I want to add variable and result of function. Input:

t t t t
a t a ta
ata ta a a

Script:

{
key="t"
print gsub(key,"")#<-it's work
b=b+gsub(key,"")#<- it's something wrong
}
END{
print b}#<-so this is 0

Output:

4
2
2
0#<-the last print

With `t+r` you implicitly cast both variables to numbers, and both become zero. Strings resembling numbers are converted to numbers: `t="1";r="2";w=t+r;print w` prints `3`. — simlev, Apr 12 '18 at 13:01

score 11 · Accepted Answer · edited May 23 '17 at 12:41

11

No operator is needed (or used). Your example would be something like

BEGIN{
t="."
r=";"
w=t r
print w}

For related discussion

edited May 23 '17 at 12:41

Community

answered Aug 31 '15 at 08:00

Thomas Dickey

Ok. I have one more problem. I would like to make arithmetic operation: b=b+gsub(key,""). I will add this in my post. – diego9403 Aug 31 '15 at 08:56
@diego9403: post it as a new question instead – Thor Aug 31 '15 at 10:31
agree - the addition to OP's question exercises a different aspect of strings. – Thomas Dickey Aug 31 '15 at 19:34

1 Answers1