stdio.h>int Factorial(int n){ if (n>1) {return n*Factorial(n-1); }else return 1;}int main(){ int n=0; double e=0; int FacTmp=0; double InvFacTmp=1; double expt=0.0001; int i,j;/* using for*/ for (n=0;InvFacTmp>expt;n++) {FacTmp=Factorial(n);InvFacTmp=1.0/FacTmp;e...