while 循环3```c #include /* */ int main29(){ double h = 100;//

#include<stdio.h>
/*



*/
int main29(){
	
	double h = 100;//  double
	//循环执行10次
	int i = 0;
	while(h > 0.5){
		h=h/2;
		i++;
		printf("第%d次落下之后的高度是：%f\n",i,h);
	} 
	printf("%d",i);
	
	return 0;
}
```\

```c
#include<stdio.h>
/*



*/
int main(){
	
	
	int i =1;
	while (i<10){
		printf("第%d\n",i);
		i++;
	} 
	
	int j;
	for(j = 1;j<10;j++){
		printf("第%d\n",j);
	}
	
	return 0;
}