suma de una serie en c++

#include<iostream> using namespace std; main(){ float n,x,c,s,e,k,fac,i,j; s=0; cout<<"ingrese x: ";cin>>x; cout<<"ingrese n: ";cin>>n; for( i=0;i<n;i++){ k=0;e=1;fac=1; for( j=0;j<=k;j++){ e=e*x; } c=1;fac=1; for( j=0;j<=k;j++){ fac=fac*c; c++; } s = s + e/fac; k++; } cout<<"la suma es: "<<s+1; }