不知道问题出在哪里...fstream问题

[kimi876]

不知道怎样才能把红色字部分的内容写在txt里面
刚学C++...囧
#include <iostream>
#include <cstdlib>
#include <fstream>

using namespace std;

int height, feet, inches, weight;
double BMI;

int main() {
string height, feet, inches, weight, BMI;

ofstrem outfile;
outfile.open("HW.txt");


void promptUser(void);

outfile.setf(ios::fixed,ios::floatfield);

promptUser();


while (BMI > 0) {
if (BMI < 18.5) {
outfile << "Your MBI is " << BMI << ", "
<< "indicating your weight is in the Underweight category\n"
<< "for adults of your height" << endl << endl;
promptUser();
}

if ((BMI >= 18.5) && (BMI < 24.9)) {
outfile << "Your MBI is " << BMI << ", "
<< "indicating your weight is in the Normal category\n"
<< "for adults of your height" << endl << endl;
promptUser();
}

if ((BMI >= 25.0) && (BMI < 29.9)) {
outfile << "Your MBI is " << BMI << ", "
<< "indicating your weight is in the Overweight category\n"
<< "for adults of your height" << endl << endl;
promptUser();
}

if (BMI >= 30.0) {
outfile << "Your MBI is " << BMI << ", "
<< "indicating your weight is in the Obese category\n"
<< "for adults of your height" << endl << endl;
promptUser();
}
}
outfile.close();
system("PAUSE");
return EXIT_SUCCESS;
}


void promptUser() {

cout << "Enter the patient's height"
<< "(in ft and inches-Enter 0 0 to stop): ";
cin >> feet >> inches;
cout << "Enter the patient's weight(in pounds): " ;
cin >> weight;

height = 12 * feet + inches;
cout.precision(1);
BMI = weight * 703 / ( height * height );

outfile << "Height: " << feet << " feet, "
<< inches << " inches" << endl;
outfile << "Weight: " << weight << " pounds" << endl;

}

[ysuliu]

补充：

这样使用： promptUser(outfile);


[Quote=引用 1 楼 supermegaboy 的回复:]
promptUser改为这样：


void promptUser( ofstream& );
........

void promptUser( ofstream & outfile )
{
  .......
}


还有ofstrem outfile; 应为ofstream outfile; 少了个a
[/Quote]

[飞天御剑流]

promptUser改为这样：


void promptUser( ofstream& );
........

void promptUser( ofstream & outfile )
{
.......
}


还有ofstrem outfile; 应为ofstream outfile; 少了个a

[kimi876]

行了....
小弟萬分感謝了

[zgjxwl]

up

[kimi876]

[Quote=引用 2 楼 ysuliu 的回复:]
补充：

这样使用： promptUser(outfile);


引用 1 楼 supermegaboy 的回复:
promptUser改为这样：


void promptUser( ofstream& );
........

void promptUser( ofstream & outfile )
{
  .......
}


还有ofstrem outfile; 应为ofstream outfile; 少了个a

[/Quote]
還是不行啊...while裏面的BMI寫不到....

[oyster2008]

string height, feet, inches, weight, BMI
上面这个BMI是干什么的?与全局变量同名了，删了应该就可以了。

[jkx01whg]

void promptUser( ofstream& );
........

void promptUser( ofstream & outfile )
{
.......
}


还有ofstrem outfile; 应为ofstream outfile;