Question

3n+1 对于任意大于1的自然数n,若n为奇数,则将n将变为3n+1,否则变为n的一半.经过若干次这样的变换,一

Answer 1

//AC过了的

#include

int main()

{

int n,i;

double sum;

scanf("%d",&n);

sum = n;

i = 1;

while(n != 1)

{

if(n % 2)

n = n * 3 + 1;

else

n /= 2;

sum += n;

i ++;

}

printf("%.3f",(double)sum/i);

return 0;

}