#include<stdio.h>
#include<math.h>
void main()
{
    double sum,term=1,x;
    int k=0,sign=1;
    printf("x:");
    scanf("%lf",&x);
    sum=1;
    while(fabs(term)>1e-6)
    {
        k=k+2;
        term*=x*x/k/(k-1);
        sign=-sign;
        sum+=sign*term;
        printf("sum=%6.2lf\n",sum);
    }
}

#include <stdio.h>
#include <math.h>

int jiecheng(int n)//求阶乘
{
    if(n == 0)
        return 1;
    else
        return n * jiecheng(n - 1);
}

double funcos(double e,double x)
{
    int i = 1, m = 0;
    double sum = 1.0, term = 1.0;
    while(1){
        term = term*x*x/(double)jiecheng(2 * i) * (-1);
        if(abs(term) < e) break;
        sum += term;
        i++;
    }
    return sum;
}

int main()
{
    double e, x;
    scanf("%lf%lf", &e, &x);
    printf("cos(x) = %lf\n", funcos(e, x));
    return ;
}

好吧！写完了，求交往！哈哈……

#include <stdio.h>
#include <math.h>

int jiecheng(int n)//求阶乘
{
    if(n == 0)
        return 1;
    else
        return n * jiecheng(n - 1);
}

double funcos(double e,double x)
{
    int i = 1, m = 0;
    double sum = 1.0, term = 1.0;
    while(1){
        term = term*x*x/(double)jiecheng(2 * i) * (-1);
        if(abs(term) < e) break;
        sum += term;
        i++;
    }
    return sum;
}

int main()
{
    double e, x;
    scanf("%lf%lf", &e, &x);
    printf("cos(x) = %lf\n", funcos(e, x));
    return ;
}

好吧！写完了，求交往！哈哈……

#include <stdio.h>
#include <math.h>

int jiecheng(int n)
{
    if(n == 0)
        return 1;
    else
        return n * jiecheng(n - 1);
}

double funcos(double e,double x)
{
    int i = 1, m = 0;
    double sum = 1.0, term = 1.0;
    while(1){
        term = term*x*x/(double)jiecheng(2 * i) * (-1);
        if(abs(term) < e) break;
        sum += term;
        i++;
    }
    return sum;
}

int main()
{
    double e, x;
    scanf("%lf%lf", &e, &x);
    printf("cos(x) = %lf\n", funcos(e, x));
    return ;
}

还是我帮帮你的，同求交往……哈哈

程序猿都这么寂寞啊.....我还是把头像换了吧.....不过谢谢大家帮忙了~

额，我大一谈不上寂寞  哈哈  不过，就对编程蛮感兴趣而已，互相帮助蛮好~~~~

被发现的结果就是   帖子被删   论坛  第一个帖子 就说了。

这是明目张胆了吧？