红颜文丛

摘要： #includeint main(void){ int m,n; float result,sum; float fact(int n); printf("enter m and n:"); scanf("%d %d",&m,&n); sum=fact(m-n); result=fact(m)/(fact(n)*sum); printf("result=%.0f\n",result); return 0;}float fact(int n){ int i; float result; result=1; for(i=. 阅读全文

摘要： #includedouble fact(int i);int main(void){ int i; double sum; sum=0; for(i=1;i<=100;i++) sum=sum+fact(i); printf("1!+2!+……+100!=%e\n",sum); return 0;}double fact(int n){ int i; double product; product=1; for(i=1;i<=n;i++) product=product*i; retur... 阅读全文