answer.code: In function ‘int main()’:
answer.code:9:29: error: expected ‘;’ before ‘}’ token
    9 |     printf("%.6f",(r-l+1)*p)
      |                             ^
      |                             ;
   10 | }
      | ~                            
answer.code:8:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    8 |     scanf("%lld%lf%lld%lld",&n,&p,&l,&r);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~