![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
用格雷戈里公式求 的近似值。请报告一下代码中pi变量中第四次值(包括0))。 #include
#include
int main(void) { int denominator, flag; double item, pi; flag = 1; denominator = 1; item = 1.0; pi = 0; while(fabs (item) >= 0.0001) { item = flag * 1.0 / denominator; pi = pi + item; flag = -flag; denominator = denominator + 2; } pi = pi * 4; printf ( "pi = %f\n", pi); return 0; }