int main() { int val[8] = {15, 22, -15, 11, 3, -6, 91, 28}; int val2[5] = {1, 2, 1, 3, 1}; int val3[3] = {1, 1, 1}; SparseMatrix a; a.Init2(val2); SparseMatrix b; b.Init3(val3); a.Output(); b.Output(); SparseMatrix c = a.Multiply(b); c.Output(); }