文件名称：泊松分布函数求和故事的源程序
文件大小：563B
文件格式：C
更新时间：2014-04-09 17:12:08
c yuyan
比较有挑战的数学题目！ #include "math.h" #include "stdio.h" main() { int k,i,j; double p,a,b,m,last=0,h; printf("put in k,p\n"); scanf("%d",&k); scanf("%lf",&p); printf("p=%lf\n it is right",p); printf("k=%d\n it is right",k); for(j=0;j<=k;j++) {for(i=1,h=1;i<=j;i++) {h=h*i ; } a=pow(p,j); b=exp(-p); printf("h=%lf\n",h); printf("a=%lf\n",a); printf("b=%lf\n",b); m=a*b/h; printf("m=%lf\n",m); last+= m; printf("last=%lf\n",last); } printf("last=%lf\n",last); printf(" it is right to come here"); getch(); }