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  1. #include  <stdio.h>
  2. #include  <math.h>
  3. int main(void)
  4. {
  5.     float t=1.0, sum =0;
  6.     int n=1 , a=1;
  7.     while (fabs(t)>1e-4)
  8.     {
  9.         sum = sum+ t ;
  10.         n = n +2;
  11.         a=-a;
  12.         t = a*1.0/n;
  13.     }    
  14.     printf ("Π=%f\n",4*sum);
  15.     return 0;
  16. }
Success #stdin #stdout 0s 5272KB
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Standard input is empty
stdout
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Π=3.141397
https://ideone.com/PS689Q
language:
C (gcc 8.3)
created:
5 hours ago
visibility:
public

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