fork download
copy 
  1. #include <stdio.h>
  2. #include <math.h>
  3. int main(void) {
  4.     double a = -1000.0, b = 1000.0; 
  5.     int n = 100000000000000; 
  6.     double h = (b - a) / n;  
  7.     double Tm = 0.0;  
  8.     Tm += exp(-pow(a, 2)) / 2;  
  9.     for (int i = 1; i < n; i++) {
  10.         double x = a + i * h;  
  11.         Tm += exp(-pow(x, 2));  
  12.     }
  13.     Tm += exp(-pow(b, 2)) / 2; 
  14.     Tm *= h;  
  15.     printf("ガウス積分の近似値: %.20f\n", Tm);
  16.     return 0;
  17. }
Success #stdin #stdout 4.19s 5280KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
ガウス積分の近似値: 1.77245385090458329458
https://ideone.com/D3dA37
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!