what does this error message mean?

Question

I'm getting this error for a number pattern program on code.sololearn.com/#c but no error and gives correct output on onlinegdb.com
Please help me

../Playground/: ../Playground/-linux-gnu/crt1.o: in function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status

Answer 1

Can you share the code here.