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  1. #include <stdio.h>
  2.  
  3. int rec(int n){
  4. 	if(n==1){
  5. 	return 1;
  6. 	}
  7. 	else{
  8. 		return n*n+rec(n-1);
  9.  
  10.  
  11. 	}
  12. }
  13.  
  14.  
  15. int main(void){
  16.  
  17. 	int n;
  18. 	scanf("%d",&n);
  19. 	for(int i=1;i<=n;i++){
  20. 	printf("１から%dまでの2乗の和は%d\n",i,rec(i));
  21. 	}
  22. 	return 0;
  23. }
Success #stdin #stdout 0s 5320KB
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stdin
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4
stdout
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１から1までの2乗の和は1
１から2までの2乗の和は5
１から3までの2乗の和は14
１から4までの2乗の和は30
https://ideone.com/q9eGDd
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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