foo.c: In function 'main':
foo.c:15:2: error: unknown type name 'student'
foo.c:21:34: error: request for member 'name' in something not a structure or union
foo.c:21:45: error: request for member 'qm' in something not a structure or union
foo.c:21:54: error: request for member 'bj' in something not a structure or union
foo.c:21:63: error: request for member 'gb' in something not a structure or union
foo.c:21:72: error: request for member 'xb' in something not a structure or union
foo.c:21:81: error: request for member 'lw' in something not a structure or union
foo.c:22:7: error: request for member 'ss' in something not a structure or union
foo.c:23:10: error: request for member 'qm' in something not a structure or union
foo.c:23:22: error: request for member 'lw' in something not a structure or union
foo.c:23:34: error: request for member 'ss' in something not a structure or union
foo.c:24:10: error: request for member 'qm' in something not a structure or union
foo.c:24:22: error: request for member 'bj' in something not a structure or union
foo.c:24:34: error: request for member 'ss' in something not a structure or union
foo.c:25:10: error: request for member 'qm' in something not a structure or union
foo.c:25:22: error: request for member 'ss' in something not a structure or union
foo.c:26:10: error: request for member 'xb' in something not a structure or union
foo.c:26:24: error: request for member 'qm' in something not a structure or union
foo.c:26:36: error: request for member 'ss' in something not a structure or union
foo.c:27:10: error: request for member 'bj' in something not a structure or union
foo.c:27:22: error: request for member 'gb' in something not a structure or union
foo.c:27:36: error: request for member 'ss' in something not a structure or union
foo.c:28:12: error: request for member 'ss' in something not a structure or union
foo.c:32:11: error: request for member 'ss' in something not a structure or union
foo.c:32:19: error: request for member 'ss' in something not a structure or union
foo.c:35:28: error: request for member 'name' in something not a structure or union
foo.c:35:38: error: request for member 'ss' in something not a structure or union
foo.c:15:10: warning: variable 's' set but not used [-Wunused-but-set-variable]