C++作业7

项目2：奇偶阶乘#include<iostream>using namespace std;int f(int x);int fun(int y);int main(){    int i,a[10]= {1,2,3,4,5,6,7,8,9,10};    int s1=0,s2=0;    for(i=0; i<10; i++)    {        if(f(a[i]))            s1+=fun(a[i]);        else            s2+=fun(a[i]);    }    cout<<"偶数的阶乘和为:"<<s1<<endl;    cout<<"奇数的阶乘和为:"<<s2<<endl;    return 0;}int f(int x){    int t;    if(x%2==0)        t=1;    else        t=0;    return t;}int fun(int y){    int f;    if(y==0)        f=1;    else        f=y*fun(y-1);    return f;}项目3 :杨辉三角形#include<iostream>using namespace std;int fun(int t);//形成杨辉三角形int main(){    int n;    cout<<"杨辉三角形的阶数为:";    cin>>n;    fun(n);    return 0;}int fun(int t){    int a[100][100];    int i,j;    for(i=0; i<t; i++)    {        a[i][0]=1;        a[i][i]=1;    }    for(i=2; i<t; i++)    {        for(j=1; j<i; j++)        {            a[i][j]=a[i-1][j]+a[i-1][j-1];        }    }    for(i=0; i<t; i++)    {        for(j=0; j<=i; j++)        {            cout<<a[i][j]<<" ";        }        cout<<endl;    }}