/in/foo.cc: In function 'int main()':
/in/foo.cc:15:12: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    if(x<=a && y<=b|| x<=a && y>b || x>a && y<=b)
       ~~~~~^~~~~~~
/in/foo.cc:15:41: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    if(x<=a && y<=b|| x<=a && y>b || x>a && y<=b)
                                     ~~~~^~~~~~~
/in/foo.cc:8:3: warning: 'a' is used uninitialized in this function [-Wuninitialized]
  x=a;
  ~^~
/in/foo.cc:9:3: warning: 'b' is used uninitialized in this function [-Wuninitialized]
  y=b;
  ~^~
/in/foo.cc:21:4: warning: 'a' is used uninitialized in this function [-Wuninitialized]
   x=a;
   ~^~
/in/foo.cc:22:4: warning: 'b' is used uninitialized in this function [-Wuninitialized]
   y=b;
   ~^~