大神帮找找错!!十万火急!!

yingair 2012-10-21 02:30:45

#include<iostream>
using namespace std;
template<class T>
struct Term
{
int row,col;
T value;
};

template<class T>
class SparseMatrix
{
public:
SparseMatrix(int maxTerms=10);
~SparseMatrix(){delete []a;};
void Input();
void Output();
private:
int rows,cols;
int terms;
Term<T> *a;
int MaxTerms;
};

template<class T>
SparseMatrix<T>::SparseMatrix(int maxTerms)
{
if(maxTerms<1)cout<<"error!";
MaxTerms = maxTerms;
a = new Term<T>[MaxTerms];
terms=rows=cols=0;
};

template<class T>
void SparseMatrix<T>::Output()
{
cout<<"rows="<<rows<<" "<<"columns="<<cols<<endl;
cout<<"nonzero terms = "<<terms<<endl;
for(int i=0;i<terms;i++)
cout<<"a("<<a[i].row<<','<<a[i].col<<")="<<a[i].value<<endl;
}

template<class T>
void SparseMatrix<T>::Input()
{
int r,c,v;
cout<<"Enter number of rows,columns,and terms"<<endl;
getchar();
cin>>rows;
getchar();
cin>>cols;
getchar();
cin>>terms;
getchar();
if(terms>MaxTerms)cout<<"error!";
cout<<"Enter row,column,and value of term"<<endl;
int i=0;
for(int j=0;j<terms;j++){
getchar();
cin>>r;
getchar();
cin>>c;
getchar();
cin>>v;
getchar();
a[i].row=r;
a[i].col=c;
a[i].value=v;
i++;

}

}

int main()
{
SparseMatrix<int> s1;
s1.Input();
s1.Output();
system("pause");
return 0;
}

运行的时候是这样的:
Enter number of rows,columns,and terms
(2,2,1)
Enter row,column,and value of term
(1,1,1)
rows=2 columns=2
nonzero terms=1
a(-858993460,-858993460)=-858993460

最后为什么是这样呢????求解答!!!!!

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yingair 2012-10-21

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谢谢诸位了!!问题已经解决了!确实是getchar()的问题

JiMoKuangXiangQu 2012-10-21

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有2个getchar()调用是多余的.

JiMoKuangXiangQu 2012-10-21

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#include<iostream>

using namespace std;



template<class T>

struct Term

{

	int row,col;

	T value;

};





template<class T>

class SparseMatrix

{

public: 

	SparseMatrix(int maxTerms=10);

	~SparseMatrix(){delete []a;};

	void Input();

	void Output();

private:

	int rows,cols;

	int terms;

	Term<T> *a;

	int MaxTerms;

};





template<class T>

SparseMatrix<T>::SparseMatrix(int maxTerms)

{

	if(maxTerms<1)cout<<"error!";

	MaxTerms = maxTerms;

	a = new Term<T>[MaxTerms];

	terms=rows=cols=0;

};





template<class T>

void SparseMatrix<T>::Output()

{

	cout<<"rows="<<rows<<" "<<"columns="<<cols<<endl;

	cout<<"nonzero terms = "<<terms<<endl;

	for(int i=0;i<terms;i++)

		cout<<"a("<<a[i].row<<','<<a[i].col<<")="<<a[i].value<<endl;

}





template<class T>

void SparseMatrix<T>::Input()

{

	int r,c,v;

	cout<<"Enter number of rows,columns,and terms"<<endl;

	//getchar();

	cin>>rows;

	getchar();

	cin>>cols;

	getchar();

	cin>>terms;

	getchar();

	if(terms>MaxTerms)cout<<"error!";

	cout<<"Enter row,column,and value of term"<<endl;

	int i=0;

	for(int j=0;j<terms;j++){

		//getchar();

		cin>>r;

		getchar();

		cin>>c;

		getchar();

		cin>>v;

		getchar();

		a[i].row=r;

		a[i].col=c;

		a[i].value=v;

		i++;



	}



}





int main()

{

	SparseMatrix<int> s1;

	s1.Input();

	s1.Output();

	system("pause");

	return 0;

}