foo.cc: In function 'int main()':
foo.cc:6:10: warning: statement has no effect [-Wunused-value]
    6 |         n<=3;
      |         ~^~~
foo.cc:8:21: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
    8 |                 if(p=25*3*5%120!=0){
      |                    ~^~~~~~~~~~~~~~
foo.cc:16:21: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   16 |                 if(p=15*3*5%120!=0){
      |                    ~^~~~~~~~~~~~~~
foo.cc:24:21: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   24 |                 if(p=5*3*5%120!=0){
      |                    ~^~~~~~~~~~~~~

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