foo.cc: In function ‘int main()’:
foo.cc:23:25: warning: this ‘else’ clause does not guard... [-Wmisleading-indentation]
   23 |                         else
      |                         ^~~~
foo.cc:26:33: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘else’
   26 |                                 if(x>=2)
      |                                 ^~
foo.cc:6:32: warning: unused variable ‘t’ [-Wunused-variable]
    6 |         long long int x=0,x1=0,t=0,z=2,i=2,sum=0;
      |                                ^