#include <stdio.h>
int rec(int n){
if (n == 1){
return 1;
}
else{
return n*n+rec(n-1);
}
}
int main(void) {
int n;
for(n=1;n<=4;n++){
printf("1から%dまでの二乗和の値は%d\n", n
, rec
(n
)); }
return 0;
}
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