/in/foo.cc: In function 'int main()':
/in/foo.cc:14:14: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
         else if(x>=25&&x<100)
              ^~
/in/foo.cc:16:11: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
           printf("%.3f",y);
           ^~~~~~
/in/foo.cc:16:17: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
           printf("%.3f",y);
           ~~~~~~^~~~~~~~~~