C++怎么让这段程序循环执行？？

Question

#include<iostream.h>
void main()
{
float a,b,c;
cout<<"Enter the gallons used (-1 to end ):";
cin>>a;
if(a==-1)
cout<<"The overall average Miles/Gallon was 21.601423";
else
cout<<"Enter the miles driven:";
cin>>b;
c=b/a;
cout<<"The MIles / Gallon for this tank was "<<c<<endl;

}
初学C++， 这段代码怎么让它循环执行啊？ 就是输出结果后程序不结束，又重新从第一条开始执行输入A的值？

Answer 1

#include<iostream.h>
void main()
{
while(1)
{
float a,b,c;
cout<<"Enter the gallons used (-1 to end ):";
cin>>a;
if(a==-1)
cout<<"The overall average Miles/Gallon was 21.601423";
else
cout<<"Enter the miles driven:";
cin>>b;
c=b/a;
cout<<"The MIles / Gallon for this tank was "<<c<<endl;
}

}不过这样的死循环哦，就是一直循环不停的意思，如果需要其他功能以后再跟我说

Answer 2

一般在外面加个while(1){}就可以了！

Answer 3

while(1){写你的代码}