Fatal division by zero attempted Post: 303040603

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Top Forums UNIX for Beginners Questions & Answers Fatal division by zero attempted Post 303040603 by Eric7giants on Friday 1st of November 2019 02:11:52 PM

11-01-2019

Registered User

Fatal division by zero attempted

Hello. I'm writing an awk script that looks at a .csv file and calculates the weighted grade based on the scores and categories in the file. I keep getting a fatal division by zero attempted error and I know what it means but I've been looking over the code for awhile and am not sure what is causing it. Here is the code that I have:

Code:

BEGIN{
FS = ","
print "Name\tPercent\tLetter"
a=0
}

{

if(a==0){
        a+=1
}

else{
        sum[$1] += $4
        total[$1] += $5
        students[$1]++
        category[$2]++
}
}

END{

for (student in students){
        Homework=(sum[$1"Homework"]/total[$1"Homework"])*0.10
        Lab=(sum[$1"Lab"]/total[$1"Lab"])*.30
        Final=(sum[$1"Final"]/total[$1"Final"])*.15
        Quiz=(sum[$1"Quiz"]/total[$1"Quiz"])*.40
        Survery=(sum[$1"Survey"]/total[$1"Survey"])*.05
        total=Homework+Lab+Final+Quiz+Survey
}


printf "%s\t%.2f\t",student, total

if(total>=90 && total<=100)
        print "A";

else if(total>=80 && total<90)
        print "B";

else if(total>=70 && total<80)
        print "C";

else if(total>=60 && total<70)
        print "D";

else
        print "E"

}

Eric7giants

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mtbl_info

MTBL_INFO(1)															      MTBL_INFO(1)

NAME

       mtbl_info - display information about an MTBL file

SYNOPSIS

       mtbl_info FILE [FILE]...

DESCRIPTION

       mtbl_info(1) displays the following information about the MTBL files specified on the command line.

       file name -- the name of the MTBL file.

       file size -- the total size of the MTBL file, in bytes.

       index bytes -- the total number of bytes and proportion of the total file size consumed by the index.

       data block bytes -- the total number of bytes and proportion of the total file size consumed by data blocks.

       data block size -- the maximum size of an uncompressed data block.

       data block count -- the total number of data blocks.

       entry count -- the total number of key-value entries.

       key bytes -- the total number of bytes that all keys in the file would occupy if stored end-to-end in a byte array with no delimiters.

       value bytes -- the total number of bytes that all values in the file would occupy if stored end-to-end in a byte array with no delimiters.

       compression algorithm -- the algorithm used to compress data blocks. Possible values are "none", "snappy" and "zlib".

       compactness -- a rough metric comparing the total number of bytes in the key-value entries with the total size of the MTBL file. It is
       calculated as (file size) / (key bytes + value bytes), and thus takes into account the gains of data block compression and prefix key
       compression against the overhead of the index, trailer, and data block offset arrays.

								    05/29/2012							      MTBL_INFO(1)