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  1. #include<stdio.h>
  2.  
  3. double seki(double x, double y);
  4.  
  5. int main(void)
  6. {
  7.     double (*p)(double x,double y);
  8.     double n1 = 2.0;
  9.     double n2 = 3.0;
  10.  
  11.     p=seki;
  12.  
  13.     printf("%lf\n", (*p)(n1,n2));
  14.  
  15.     return 0;
  16. }
  17.  
  18. double seki(double x, double y)
  19. {
  20.     return x * y;
  21. }
Success #stdin #stdout 0s 5284KB
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Standard input is empty
stdout
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6.000000
https://ideone.com/k8HIWX
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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