/in/foo.c: In function 'main':
/in/foo.c:7:12: error: expected expression before '%' token
  printf (a=%0.2f\n,a);
            ^
/in/foo.c:7:12: error: stray '\' in program
/in/foo.c:8:2: error: 'ruturn' undeclared (first use in this function)
  ruturn 0
  ^
/in/foo.c:8:2: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:8:9: error: expected ';' before numeric constant
  ruturn 0
         ^
/in/foo.c:5:11: warning: variable 'a' set but not used [-Wunused-but-set-variable]
     float a;
           ^