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我用Dev C++ 5.5.3来编写一些程序。其中一个程序是关于获取一些数字(整数),直到零,然后打印最大值,最小值,平均值。在我的电脑里,一切都很好。在别人的电脑中,它并没有显示出正确的平均值,它显示了非常奇怪的数字4.612521 e + 8并且像这样。我定义了一个变量avg并计算出这个值然后打印出来。另一个在调用cout时直接计算平均值。有人可以检查此程序: 计划1不显示正确答案:使用cout和平均值的错误或错误
#include <iostream>
using namespace std;
int main(int argc, char** argv) {
int n;
int max , min , count = 0 , s;
float avg;
cout<<"This program gets some numbers until zero and then prints maximum, minimum and average of them"<<endl<<"Please enter a number : ";
cin>> n;
max = n;
min = n;
while (n!= 0)
{
count ++;
s+=n;
if (n>max)
{
max = n;
}
if (n<min)
{
min = n;
}
cout<< "Please enter a number : ";
cin>>n;
}
cout<<"ZERO DETECTED!\n\n"<<endl;
cout<<"Maximum: "<<max<<endl;
cout<<"Minimum: "<<min<<endl;
avg = (float) s/count ;
cout<<"Average: "<<avg<<endl; // NOTE NOTE NOTE NOTE
return 0;
}
方案2中显示了正确的答案:
#include <iostream>
using namespace std;
int main(int argc, char** argv) {
int n;
int max , min , count = 0 , s;
float avg;
cout<<"This program gets some numbers until zero and then prints maximum, minimum and average of them"<<endl<<"Please enter a number : ";
cin>> n;
max = n;
min = n;
while (n!= 0)
{
count ++;
s+=n;
if (n>max)
{
max = n;
}
if (n<min)
{
min = n;
}
cout<< "Please enter a number : ";
cin>>n;
}
cout<<"ZERO DETECTED!\n\n"<<endl;
cout<<"Maximum: "<<max<<endl;
cout<<"Minimum: "<<min<<endl;
//avg = (float) s/count ;
cout<<"Average: "<<(float) s/count<<endl; //NOTE NOTE NOTE NOTE
return 0;
}