/in/foo.cc: In function 'int main()':
/in/foo.cc:13:3: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
 if(x%j==0)
   ^
/in/foo.cc:6:7: warning: unused variable 'n1' [-Wunused-variable]
 int n,n1,a1=1,b1=1,x,m;
       ^~
/in/foo.cc:6:10: warning: unused variable 'a1' [-Wunused-variable]
 int n,n1,a1=1,b1=1,x,m;
          ^~
/in/foo.cc:6:15: warning: unused variable 'b1' [-Wunused-variable]
 int n,n1,a1=1,b1=1,x,m;
               ^~
/in/foo.cc:25:8: warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized]
 cout<<m;
        ^