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iQa1x
4 months ago

The return code from your program can be used, for example, in scripts to control the further processing.

Like

if grep -q "Foo" bar.txt ; then
  // tue was
fi

mkdir -p /tmp/test && cd /tmp/test && tar -xzf /tmp/file.tgz

in a bash script evaluates the return code. In DOS batch files, this goes too, but DOS Batch is too annoying for an example:)

ajkcdajefiu
4 months ago

an exit code is needed when the program is finished, so the main() function is written with an int-darene type to enable it

0 stands for successful program execution, while

1 represents an error

knowsNothing775
4 months ago

Because the main function returns a status value when the program is completed. As a rule 0 if no errors have occurred.

That’s what every language does.

NorbertWillhelm
4 months ago

int is the data type of the return value of the main function.

The return value is usually the exit code of the process of your program.

knowsNothing775
4 months ago

Even always, not only mostly 😛