/in/foo.c: In function 'main':
/in/foo.c:7:14: warning: left-hand operand of comma expression has no effect [-Wunused-value]
  for(i=0;i<=n,i++)
              ^
/in/foo.c:7:18: error: expected ';' before ')' token
  for(i=0;i<=n,i++)
                  ^
/in/foo.c:8:3: warning: format '%d' expects a matching 'int' argument [-Wformat=]
   printf("%d")
   ^
/in/foo.c:9:2: error: expected ';' before '}' token
  }
  ^