Bash script and Command line arguments - c++

Question

So I have a file that is called "run_correlation_study.pbs" and "correlation_study.pbs". In correlation_study.pbs, I run a bash script that uses portable batch software(pbs) and assign 3 command line arguments that will be used in my actual program. In run_correlation_study.pbs, I loop through the command line arguments that are used in correlation_study.pbs so that I can split up my program into multiple jobs for a computing cluster. However, I have been getting errors with my run_correlation_study.pbs file when I try to run it (I turn it into an executable file before running it). I have posted both file below, run_correlation_study.pbs is listed first and correlation_study.pbs is listed second. I can provide the part of my program where the command line arguments are used but I do not think the problem is caused in there. Also, the error/text that shows up when I try to run my program is listed last.
Run_correlation_study.pbs:
for ((ARC_LENGTH = 0; ARC_LENGTH <= 35; ARC_LENGTH++)); do
qsub -v ARC_LENGTH_ARG=$ARC_LENGTH/10, RANDOM_NUM_ARG=$ARC_LENGTH correlation_study.pbs
done
Correlation_study.pbs:
#PBS -l walltime=24:00:00
#PBS -l nodes=1:ppn=1
#PBS -N Correlation_study_data
#PBS -j oe
#PBS -m abe
#COMMANDS TO RUN
cd /home/kovacevich.9/correlation_study/corrstudies
./correlation_study.x ${ARC_LENGTH_ARG} ${RANDOM_NUM_ARG}
Error/text:
usage: qsub [-a date_time] [-A account_string] [-b secs]
[-c [ none | { enabled | periodic | shutdown |
depth=<int> | dir=<path> | interval=<minutes>}... ]
[-C directive_prefix] [-d path] [-D path]
[-e path] [-h] [-I] [-j oe] [-k {oe}] [-l resource_list] [-m n
{abe}]
[-M user_list] [-N jobname] [-o path] [-p priority] [-P proxy_user]
[-q queue]
[-r y|n] [-S path] [-t number_to_submit] [-T type] [-u user_list]
[-w] path
[-W additional_attributes] [-v variable_list] [-V ] [-x] [-X] [-z]
[script]
Portion of program:
if(argc == 3)
{
double test_arc_length = atof(argv[1]);
unsigned long int seed = atoi(argv[2]);

Answer 1

To do floating point arithmetic from bash, you need to call out to an external program. You could do one of:
qsub -v "ARC_LENGTH_ARG=$(bc -l <<<"$ARC_LENGTH/10"),..."
qsub -v "ARC_LENGTH_ARG=$(awk -v "a=$ARC_LENGTH" 'BEGIN {print a/10}'),..."
Using command substitution syntax $(cmd ...) within a double quoted string.