/in/foo.c: In function 'main':
/in/foo.c:6:6: warning: implicit declaration of function 'pow' [-Wimplicit-function-declaration]
  a>=-pow(10,10)&&a<=pow(10,10);
      ^~~
/in/foo.c:6:6: warning: incompatible implicit declaration of built-in function 'pow'
/in/foo.c:6:6: note: include '<math.h>' or provide a declaration of 'pow'
/in/foo.c:6:16: warning: statement with no effect [-Wunused-value]
  a>=-pow(10,10)&&a<=pow(10,10);
  ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
/in/foo.c:7:16: warning: statement with no effect [-Wunused-value]
  b>=-pow(10,10)&&b<=pow(10,10);
  ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
/in/foo.c:6:3: warning: 'a' is used uninitialized in this function [-Wuninitialized]
  a>=-pow(10,10)&&a<=pow(10,10);
  ~^~~~~~~~~~~~~
/in/foo.c:7:3: warning: 'b' is used uninitialized in this function [-Wuninitialized]
  b>=-pow(10,10)&&b<=pow(10,10);
  ~^~~~~~~~~~~~~