foo.cc: In function 'int main()':
foo.cc:13:6: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
   13 |    if(x%j==0)
      |      ^
foo.cc:6:8: warning: unused variable 'n1' [-Wunused-variable]
    6 |  int n,n1,a1=1,b1=1,x,m;
      |        ^~
foo.cc:6:11: warning: unused variable 'a1' [-Wunused-variable]
    6 |  int n,n1,a1=1,b1=1,x,m;
      |           ^~
foo.cc:6:16: warning: unused variable 'b1' [-Wunused-variable]
    6 |  int n,n1,a1=1,b1=1,x,m;
      |                ^~
foo.cc:25:8: warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized]
   25 |  cout<<m;
      |        ^

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