编程计算π的近似解:π/4 c语言

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

int main()
{
int n = 1000000; // 迭代次数
double pi = 0.0;

for (int i = 0; i < n; i++)
{
pi += pow(-1, i) / (2 * i + 1);
}

pi *= 4;

printf("pi = %f\n", pi);

return 0;
}

相关问题

C语言编程5、编程计算π的近似解：π/4=1-1/3+1/5-1/7…， 直到|1/n|<10-6 为止。

#include <stdio.h>

int main() {
    double pi = 0.0;
    double term = 1.0;
    int n = 1;
    while (term >= 1e-6 || term <= -1e-6) {
        pi += term;
        n += 2;
        term = (n % 4 == 1) ? 1.0 / n : -1.0 / n;
    }
    pi *= 4;
    printf("Approximate value of pi: %f\n", pi);
    return 0;
}

C语言5、编程计算π的近似解：π/4=1-1/3+1/5-1/7…， 直到|1/n|<10-6 为止。

#include <stdio.h>

int main() {
    double pi = 0;
    int n = 1;
    double item = 1.0;
    while (item >= 1e-6 || item <= -1e-6) { // 循环直到|1/n|<10^-6
        pi += item; // 累加每一项
        n += 2; // 计算下一项的分母
        item = -item * (n - 2) / n; // 计算下一项的值
    }
    pi *= 4; // π=4*(π/4)
    printf("pi = %lf\n", pi);
    return 0;
}