C++实现填充数组并求平均数及各值与平均数之差。 其具体实现代码如下：
#include<iostream> using namespace std; const int largeLength = 4; void fillArray(int a[],int number,int& numberUsed) { int index=0,next; cout<<"请输入"<<number<<"个非负数\n"; cout<<"键入负数表示结束！\n"; cout<<"请输入数字："<<endl; cin>>next; cout<<next<<endl; while((next>=0)&&(index<number)) { a[index]=next; index++; cout<<"请输入数字："<<endl; cin>>next; cout<<next<<endl; } numberUsed=index; cout<<"最终数为："<<numberUsed<<endl; } double computerAverage(const int a[],int numberUsed) { double total = 0.00; for(int index = 0;index<numberUsed;index++) { total += a[index]; } return total; } void showDifference(const int a[],int numberUsed) { double average = computerAverage(a,numberUsed)/numberUsed; cout<<"Average of "<<numberUsed<<" is "<<average<<endl; cout<<"The scores are \n"; for(int i=0;i<numberUsed;i++) cout<<a[i]<<"differs from average by "<<a[i]-average<<endl; } int main() { int as[largeLength],numberUsed; fillArray(as,largeLength,numberUsed); showDifference(as,numberUsed); return 0; }