我想写一些代码,将允许输入矩阵,然后计算矩阵的逆矩阵,然后输入矢量。但是一旦输入矩阵值,我就无法让代码暂停并等待向量条目,它只是执行主要的其余部分,默认情况下向零填充向量。是否可以重置输入或某些东西,以便控制台在我想填充矢量时等待输入?暂停输入C++
#include <iostream>
#include "MatrixInverse.h"
#include "ReadMatrixRow.h"
#include "GlobalMinVar.h"
using std::cin;
using std::cout;
using std::endl;
int main(){
int i;
int const n_size=3;
double **SigmaInv, **Sigma,*mu,*MinVarWeight;
Sigma = (double **)malloc(n_size * sizeof(double *));
Sigma[0] = (double *)malloc(n_size * n_size * sizeof(double));
for(i = 1; i < n_size; i++)
{ Sigma[i] = Sigma[0] + i * n_size;}
cout<<"Enter the entries of the covariance matrix row by row,"<<endl;
cout<<"breaking each row with a non-numeric character:"<<endl;
//PAUSES HERE FOR MATRIX INPUT
for (i=0;i<n_size;i++)
{
ReadMatrixRow(cin,Sigma,i);
}
mu=(double *)malloc(n_size * sizeof(double *));
cout<<"Input the expected return vector values:"<<endl;
//WANT A PAUSE HERE FOR FURTHER INPUT THAT IS SEPARATE
ReadVector(cin,mu);
for (i=0;i<n_size;i++)
{
cout<<mu[i]<<endl;
}
读取矩阵和矢量的功能是
istream& ReadMatrixRow(istream& in, double **s,int i)
{
if (in)
{
int j=0;
double x;
while (in>>x)
{
s[i][j]=x;
++j;
}
in.clear();
in.ignore(1);
}
return in;
}
istream& ReadVector(istream& in, double *s)
{
if (in)
{
int i=0;
double x;
while (in>>x)
{
s[i]=x;
++i;
}
in.clear();
}
return in;
}
这不适用于OP。 – AndyG
请勿使用'getch()'。 conio.h不在标准 – Martin