foo.cc: In function 'int main()':
foo.cc:16:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    if(s%i==0)
    ^~
foo.cc:18:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
     break;
     ^~~~~
foo.cc:9:8: warning: unused variable 'b' [-Wunused-variable]
  int a,b,x;
        ^
foo.cc:23:26: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<n<<"="<<a<<"+"<<n-a;
                          ^

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