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  1. #include <stdio.h>
  2.  
  3. int comb(int n, int k) {
  4.  
  5.     if(k==0||k==n){
  6.        return 1;
  7.     }else{
  8.          return comb(n-1,k-1)+comb(n-1,k);
  9.     }
  10. }
  11.  
  12. int main(void) {
  13.     int n, k;
  14.  
  15.     scanf("%d", &n);
  16.     scanf("%d", &k);
  17.  
  18.     printf("%dC%d = %d\n", n, k, comb(n, k));
  19.     return 0;
  20. }
  21.  
Success #stdin #stdout 0s 5288KB
comments (?)
stdin
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5 3
stdout
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5C3 = 10
https://ideone.com/VEPwwS
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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