How can I feed a string to awk for the purpose of mathematical calculation?

2 votes

4 answers

1943 views

                              #!/bin/sh --

    expression_to_evaluate='12 + 3'

    printf '%s\n' "Arithemtic Expansion: $(( $expression_to_evaluate ))"

    printf '%s' 'bc: '
    printf '%s\n' "$expression_to_evaluate" | bc

    printf '%s' 'awk: '
    awk -v expression_to_evaluate="$expression_to_evaluate" -- 'BEGIN{printf "%d\n", expression_to_evaluate}'

Output:

    Arithemtic Expansion: 15
    bc: 15
    awk: 12

awk is returning 12 instead of 15. How can I feed a string to awk for the purpose of mathematical calculation?
                        

Asked by Harold Fischer (1974 rep)

Mar 1, 2019, 05:44 AM
Last activity: May 20, 2022, 07:33 PM

How can I feed a string to awk for the purpose of mathematical calculation?

Related Questions