在本教程中,我们将讨论一个将两个矩阵相乘的程序。
为此,我们将获得两个矩阵,而我们的任务是打印两个矩阵的乘积。唯一的条件是,第一矩阵的列数应等于第二矩阵的行数。
#include <iostream> using namespace std; #define N 4 //将两个矩阵的元素相乘 void calc_product(int mat1[][N], int mat2[][N], int res[][N]){ int i, j, k; for (i = 0; i < N; i++) { for (j = 0; j < N; j++){ res[i][j] = 0; for (k = 0; k < N; k++) res[i][j] += mat1[i][k] * mat2[k][j]; } } } int main(){ int i, j; int res[N][N]; int mat1[N][N] = {{1, 1, 1, 1}, {2, 2, 2, 2}, {3, 3, 3, 3}, {4, 4, 4, 4}}; int mat2[N][N] = {{1, 1, 1, 1}, {2, 2, 2, 2}, {3, 3, 3, 3}, {4, 4, 4, 4}}; calc_product(mat1, mat2, res); cout << "Resultant matrix :\n"; for (i = 0; i < N; i++){ for (j = 0; j < N; j++) cout << res[i][j] << " "; cout << "\n"; } return 0; }
输出结果
Resultant matrix : 10 10 10 10 20 20 20 20 30 30 30 30 40 40 40 40