foo.cc: In function 'int main()':
foo.cc:5:29: warning: variable 'i' set but not used [-Wunused-but-set-variable]
    5 |         int a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;
      |                             ^
foo.cc:5:31: warning: variable 'j' set but not used [-Wunused-but-set-variable]
    5 |         int a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;
      |                               ^
foo.cc:5:33: warning: variable 'k' set but not used [-Wunused-but-set-variable]
    5 |         int a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;
      |                                 ^
foo.cc:5:35: warning: variable 'l' set but not used [-Wunused-but-set-variable]
    5 |         int a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;
      |                                   ^
foo.cc:5:37: warning: variable 'm' set but not used [-Wunused-but-set-variable]
    5 |         int a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;
      |                                     ^
foo.cc:5:39: warning: variable 'n' set but not used [-Wunused-but-set-variable]
    5 |         int a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;
      |                                       ^
foo.cc:5:41: warning: variable 'o' set but not used [-Wunused-but-set-variable]
    5 |         int a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;
      |                                         ^
foo.cc:33:39: warning: 'h' may be used uninitialized [-Wmaybe-uninitialized]
   33 |                                 cout<<h;
      |                                       ^
foo.cc:5:27: note: 'h' was declared here
    5 |         int a,b,c,d,e,f,g,h,i,j,k,l,m,n,o;
      |                           ^

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