C++ 中一个乘以两个矩阵的程序
在本教程中,我们将讨论如何编写一个程序来乘以两个矩阵。
为此,我们将得到两个矩阵,我们的任务是打印这两个矩阵的乘积。唯一的条件是第一个矩阵的列数应等于第二个矩阵的行数。
示例
#include <iostream> using namespace std; #define N 4 //multiplying the elements of both matrices 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
Resultant matrix : 10 10 10 10 20 20 20 20 30 30 30 30 40 40 40 40
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