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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int arr[]= {1, 5, 3, 4, 2};
  6. 	int n=sizeof(arr)/sizeof(arr[0]);
  7. 	int diff=2;
  8. 	int count=0;
  9. 	for(int i=0;i<n;i++){
  10. 		for(int j=i+1;j<n;j++){
  11. 			if(arr[i]-arr[j]==diff)
  12. 				count++;
  13. 		}
  14. 	}
  15. 	cout<<count;
  16. }
  17.  
Success #stdin #stdout 0s 5324KB
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stdin 
Standard input is empty
stdout 
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https://ideone.com/iFZTDS
language:
C++ (gcc 8.3)
created:
2 hours ago
visibility:
public

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