帮助请在C ++中执行while循环 [英] Help Please do while loop in C++

问题描述

如何在此问题中使用do while循环?

how to use a do while loop in this problem?

#include<iostream.h>
#include<conio.h>
int main()
{
double a=50;
double b=70;
int x=1;
clrscr();
cout<<"Year Country A       Country B";
cout<<"\n"<<x<<"\t"<<a<<"\t\t"<<b<<"\n";
while(a<b)
    {
    x++;
    a=a*1.03;
    b=b*1.02;
    cout<<" "<<x<<"\t"<<a<<"\t\t"<<b<<"\n";
    }
cout<<"\nCountry A's Population will surpass Country B's in "<<x<<"years";
getch();
return 0;
}

推荐答案

#include<iostream.h>
#include<conio.h>
int main()
{
    double a=50;
    double b=70;
    int x=1;
    clrscr();
    cout<<"Year Country A       Country B";
    do
    {
        cout<<" "<<x<<"\t"<<a<<"\t\t"<<b<<"\n";
        x++;
        a=a*1.03;
        b=b*1.02;
    }
    while(a<b);
    cout<<"\nCountry A's Population will surpass Country B's in "<<x<<"years";
    getch();
    return 0 ;
}

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