#include <stdio.h>
int func(int n){
if(n == 0){
return -1;
}else
for(int i=n;i==0;i--){
n = 3*n+5;
}
return n;
}
int main(void) {
int n = 3;
printf("数列anについて、n=%dのときの値は%d\n",n
,func
(n
)); return 0;
}
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