Compiling C Program in VS code using Code runner

Question

I have written a simple c program and given it a name of program When The code is made to run using code runner extension it uses this kind of statement

PS C:\Users\user_name> cd "c:\Users\user_name\Desktop\" ; if ($?) { gcc program.c -o program } ; if ($?) { .\program }

In this i could understand ( gcc program.c -o program ) but what does if ($?) and if($?) {.\program } mean ?

I would recommend adding more switches: `-Wall -Werror` to the gcc command line! — Antti Haapala -- Слава Україні, Sep 16 '20 at 14:49
In many environments, `$?` refers to the exit status of the last execution. I guess that `if ($?)` means "if the last step succeeded". — Kevin Boone, Sep 16 '20 at 14:50

score 0 · Accepted Answer · answered Sep 18 '20 at 02:59

if($?) means if the previous step is successful

PS C:\Users\user_name> cd "c:\Users\user_name\Desktop\" ; if ($?) { gcc program.c -o program } ;

here if ($?) means if there exists a file named program.c then compile using the command

gcc program.c -o program

so does the next line,

if ($?) { .\program }

if the executable file is succesfully created then run the executable file using .\program command

Compiling C Program in VS code using Code runner

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