/in/foo.c: In function 'main':
/in/foo.c:13:13: warning: 'main' is normally a non-static function [-Wmain]
   13 |         int main() {
      |             ^~~~
/in/foo.c: In function 'main':
/in/foo.c:14:12: error: 'maxL' undeclared (first use in this function)
   14 |     char s[maxL];
      |            ^~~~
/in/foo.c:14:12: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:16:11: warning: implicit declaration of function 'strcspn' [-Wimplicit-function-declaration]
   16 |         s[strcspn(s, "\n")] = 0;
      |           ^~~~~~~
/in/foo.c:2:1: note: include '<string.h>' or provide a declaration of 'strcspn'
    1 | #include <stdio.h>
  +++ |+#include <string.h>
    2 | int main()
/in/foo.c:16:11: warning: incompatible implicit declaration of built-in function 'strcspn' [-Wbuiltin-declaration-mismatch]
   16 |         s[strcspn(s, "\n")] = 0;
      |           ^~~~~~~
/in/foo.c:16:11: note: include '<string.h>' or provide a declaration of 'strcspn'
/in/foo.c:31:5: error: 'cout' undeclared (first use in this function)
   31 |     cout<<"%s\n",s<<endl;
      |     ^~~~
/in/foo.c:31:21: error: 'endl' undeclared (first use in this function)
   31 |     cout<<"%s\n",s<<endl;
      |                     ^~~~
/in/foo.c:31:17: warning: left-hand operand of comma expression has no effect [-Wunused-value]
   31 |     cout<<"%s\n",s<<endl;
      |                 ^
/in/foo.c:14:10: warning: unused variable 's' [-Wunused-variable]
   14 |     char s[maxL];
      |          ^
/in/foo.c: In function 'main':
/in/foo.c:33:1: error: expected declaration or statement at end of input
   33 | }
      | ^
/in/foo.c: At top level:
/in/foo.c:13:13: warning: 'main' defined but not used [-Wunused-function]
   13 |         int main() {
      |             ^~~~