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// 4.cpp
#include <iostream>
using namespace std;
void mulmatvec(int m, int n, double **a, double *x, double *b){
int i,j;
for(i=0; i<m; i++){
b[i] = 0.;
for(j=0; j<n; j++)
b[i] += a[i][j]*x[j];
}
return;
}
int main(){
int i, j, m, n;
cout<<"Ingrese el numero de filas en la matriz \n";
cin>>m;
cout<< "Ingrese el numero de columnas en la matriz \n";
cin>>n;
// Asignando espacio para los vectores
double *x = new double[n];
double *b = new double[m];
// Asignando espacio para la matriz
double **a = new double* [m];
for(i=0; i<m; i++)
a[i]=new double[n];
if(!x || !b || !a){
cerr<<"No es posible asignar espacio\n";
return 1;
}
cout<<"Ingrese los elementos de la matriz A\n";
for(i=0; i<m; i++)
for(j=0; j<n; j++)
cin>>a[i][j];
cout<<"Ingrese los elementos del vector x\n";
for(j=0; j<n; j++)
cin>>x[j];
mulmatvec(m,n,a,x,b);
cout<<"\nA*x = \n"<<endl;
for(i=0; i<m; i++)
cout<<b[i]<<"\n";
delete [] a;
delete [] b;
delete [] x;
return 0;
}
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