wc -l or wc -c which linux command is best to find total read count in fastq file?

hello there, I am working on RNA seq data and while counting read counts I came across two type of commands using either wc -l and wc -c command. The out put of both commands turns out different when run for read count numbers.
if both commands use for total read count then why different output?
I am confused which command is best to use for counting total read count in fastq file. Please guide about it