/in/foo.cc: In function 'int main()':
/in/foo.cc:19:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   if(z1>sqrt(i))
   ^~
/in/foo.cc:21:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
    int z2=2;
    ^~~
/in/foo.cc:28:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   if(z2>sqrt(d))
   ^~
/in/foo.cc:30:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
    if(x1+x2==x)
    ^~
/in/foo.cc:6:18: warning: 'd' may be used uninitialized in this function [-Wmaybe-uninitialized]
  int x,i=2,x1,x2,d;
                  ^
/in/foo.cc:30:9: warning: 'x2' may be used uninitialized in this function [-Wmaybe-uninitialized]
    if(x1+x2==x)
       ~~^~~