关于 C 语言 For 循环的问题请教

[FalconWang]

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int level(int l)
{
int sum;
if(l==1)
sum=1;
else
sum=level(l-1)*2;
return(sum);
}

int main()
{
int level(int l);
char ch;
int a,b=1;
printf("Study is a long and hard road.\n");
printf("The more you study,the further you will reach.\n");
printf("Such as if you learn 1 year, you will reached level %d.\n",level(1));
do
{
b=b+1;
printf("such as if you learn %d years, you will reached %d level.\n",b,level(b));
printf("do you want to continue?(y/n).\n");
ch=getchar();
getchar();
}while(ch=='y'||ch=='Y');
}

期望结果为：
学习 1 年，到达第 1 级
学习 2 年，到达第 2 级
以此类推...

上面这段程序结果：到达的级别数呈指数增长，想知道原因，拜托各位了，感激不尽...

[weifengzi2009]

你这个 level 函数递归每次都乘以 2，那不是 2*2*2*2*2 这样子么？

[GTim]

```
#include<stdio.h>
#include<string.h>
#include<stdlib.h>

int level(int l)
{
return l == 1 ? 1 : level(l-1)+1;
}

int main()
{
char ch;
int a,b=1;

printf("Study is a long and hard road.\n");
printf("The more you study,the further you will reach.\n");
printf("Such as if you learn 1 year, you will reached level %d.\n",level(1));

do {
b=b+1;
printf("such as if you learn %d years, you will reached %d level.\n",
b,level(b));
printf("do you want to continue?(y/n).\n");

ch=getchar();
getchar();

} while(ch == 'y'|| ch== 'Y');
}
```

测试格式化代码

以上是楼主代码的简化和想要的版本

[FalconWang]

感谢各位解答 问题已解决

[wutiantong]

@GTim 只有主题正文支持 markdown，回复内容不支持。。。