Question

用c语言编写程序，输入两个正整数m和n，计算m!+n!

Answer 1

#include <stdio.h>
void main()
{
//计算阶乘数的加和
float i,m,n,ji=1,sum=0,sum1=0,sum2=0;
scanf("%f",&m);
scanf("%f",&n);
for(i=1;i<=m;i++)
{
ji*=i;
sum1+=ji;
}
for(i=1;i<=n;i++)
{
ji*=i;
sum2+=ji;
}
sum0=sum1+sum2;
printf("阶乘的加和结果是:%.2f\n",sum0);
}

Answer 2

#include "stdio.h"
int Jie(int a)//求阶乘的函数
{
int i,s=1;
for(i=1;i<=a;i++)
s*=i;
return s;
}
void main()
{
int m,n,sum=0;
printf("请输入m,n\n");
scanf("%d%d",&m,&n);
sum=Jie(m)+Jie(n);
printf("%d",sum);
}

Answer 3

#include<stdio.h>
#include<stdlib.h>
int main()
{
int q, m, n, x, z, s;
scanf("%d%d", &m, &n);
x = m > n ? n : m, z = m > n ? m : n;
for (s = q = 1; q <= x; s *=q, q++)
s *= 2;
for (q = x + 1; q <= z; s *= q, q++)
printf("result = %d\n", s);
return 0;
}