#include
int main()
{
float pi=0,n=1;
int t = 1;
while (1.0 / n >= 1e-4)
{
pi += t * 1.0 / n;
t = -t;
n = n + 2;
}
printf("pi=%f", 4*pi);
return 0;
}
输出结果

#include
int main()
{
float pi=0,n=1;
int t = 1;
while (1.0 / n >= 1e-4)
{
pi += t * 1.0 / n;
t = -t;
n = n + 2;
}
printf("pi=%f", 4*pi);
return 0;
}
输出结果