Main.cc: In function ‘int main()’:
Main.cc:10:9: error: return-statement with no value, in function returning ‘int’ [-fpermissive]
10 | return;
| ^~~~~~
Main.cc:8:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
8 | scanf("%d",&n);
| ~~~~~^~~~~~~~~