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- #include <iostream>
- using namespace std;
- #define lin 3
- #define col 4
- #define pos 12
- int main()
- {
- int mat[lin][col], vet[pos], i, j, k, n, media=0;
- cout << "Digite os elementos do vetor: ";
- for (i=0; i<lin; i++)
- for (j=0; j<col; j++)
- cin >> mat[i][j];
- for (i=0; i<lin; i++)
- for (j=0; j<col; j++)
- {
- k = i * col + j;
- vet[k] = mat[i][j];
- }
- cout << "\nmatriz construida:";
- for (i=0; i<lin; i++)
- {
- cout << "\n";
- for (j=0; j<col; j++)
- {
- cout << " " << mat[i][j];
- }
- }
- cout << "\nvetor construido:\n";
- for (k=0; k<pos; k++)
- cout << " " << vet[k];
- cout << "\nDigite a posicao da matriz (linha e coluna): ";
- cin >> i >> j;
- i--; j--;
- cout << "O valor encontrado eh: " << mat[i][j];
- cout << "\nDigite o numero da linha para saber a media dela: ";
- cin >> n;
- n--;
- media=0;
- for (j=0; j<col; j++)
- media += mat[n][j];
- media /= col;
- cout << "\nA media da linha eh: " << media;
- cout << "\nDigite o numero da coluna para saber a media dela: ";
- cin >> n;
- n--;
- media = 0;
- for (i=0; i<lin; i++)
- media += mat[i][n];
- media /= lin;
- cout << "\nA media da coluna eh: " << media;
- }
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