摘要：
#includedouble fact(int n);int main(void){ int m,n; double y,x; printf("Enter n:"); scanf_s("%d",&n); printf("Enter m:"); scanf_s("%d",&m); x=fact(n)*fact(m-n); y=fact(m)/x; printf("result=%.0f\n",y); return 0;}double fact(int n){ int i; doub 阅读全文
摘要：
#includeint main(void){ int i,j; double item,sum; sum=0; for(i=1;i<=100;i++){ /*设置循环数值小于100*/ item=1; for(j=1;j<=i;j++) /*嵌套循环*/ item=item*j; sum=sum+item; } printf("1!+2!+…+100!=%e\n",sum);return 0;} 阅读全文