标签：‎‍#include‎‍main()‎‍{doubles=.;inti，n;‎‍scanf(“%d”，&n);‎‍for(i=;i<=n;i++)‎‍s=s+_______‎‍s=(sqrt(*s));‎‍printf(“s=%e”，s);}‎A./(i*i)B./i*iC/i*iD./(n*n)