Hello, I'm trying to make a matrix calculator and my idea would be for the user to enter with the number of rows, columns and soon after with the array elements, the problem is that when I write the elements the program gives error of input stream, if anyone can help me.
SOURCE
#include<iostream>
#include<stdio.h>
#include<vector>
using namespace std;
int main()
{
int opc;
int L = 0; //linha
int C = 0; // coluna
vector<vector<int>> mat1(L, std::vector<int>(C));
vector<vector<int>> mat2(L, std::vector<int>(C));
vector<vector<int>> matResp(L, std::vector<int>(C));
cout << "1-Sum\n0-Exit\n";
cin >> opc;
system("cls");
switch (opc)
{
case 1:
//soma
cout << "Enter with number of Lines:\n";
cin >> L;
cout << "Enter with number of Coluns:\n";
cin >> C;
cout << "Write the elements of Matrix A:\n";
for (int i = 0; i < L; i++)
{
for (int j = 0; j < C; j++)
{
cin >> mat1[i][j];
}
}
system("cls");
cout << "Write the elements of Matrix B:\n";
for (int i = 0; i < L; i++)
{
for (int j = 0; j < C; j++)
{
cin >> mat2[i][j];
}
}
system("cls");
for (int i = 0; i < L; i++)
{
for (int j = 0; j < C; j++)
{
matResp[i][j] = mat1[i][j] + mat2[i][j];
}
}
for (int i = 0; i < L; i++)
{
for (int j = 0; j < C; j++)
{
cout << "[ " << matResp[L][C] << " ]";
if (j == 2)
cout << endl;
}
}
cout << endl;
break;
case 0:
break;
default:
cout << "Wrong option";
return main();
}
}