用C语言写代码,随机生成三个 3X3 同阶整数方阵 A,B,C,验证公式: (1) A(B+C)=AB+AC ; (2)(AB)C=A(BC) (3)(ABC) T=CT BT AT
时间: 2024-06-10 18:04:55 浏览: 62
好的,我会回答你的问题。针对你的要求,我可以提供以下 C 代码实现:
```
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define DIM 3
// 随机生成一个 DIM x DIM 的方阵
void generate_matrix(int matrix[DIM][DIM]) {
for (int i = 0; i < DIM; i++) {
for (int j = 0; j < DIM; j++) {
matrix[i][j] = rand() % 10;
}
}
}
// 打印一个 DIM x DIM 的方阵
void print_matrix(int matrix[DIM][DIM]) {
for (int i = 0; i < DIM; i++) {
for (int j = 0; j < DIM; j++) {
printf("%d ", matrix[i][j]);
}
printf("\n");
}
}
// 计算两个 DIM x DIM 的方阵的乘积
void matrix_multiply(int matrix1[DIM][DIM], int matrix2[DIM][DIM], int result[DIM][DIM]) {
for (int i = 0; i < DIM; i++) {
for (int j = 0; j < DIM; j++) {
int sum = 0;
for (int k = 0; k < DIM; k++) {
sum += matrix1[i][k] * matrix2[k][j];
}
result[i][j] = sum;
}
}
}
int main() {
srand(time(NULL));
// 随机生成三个 DIM x DIM 的方阵
int A[DIM][DIM], B[DIM][DIM], C[DIM][DIM];
generate_matrix(A);
generate_matrix(B);
generate_matrix(C);
// 计算 (1) 和 (2) 的验证结果
int AB[DIM][DIM], AC[DIM][DIM], BC[DIM][DIM];
matrix_multiply(A, B, AB);
matrix_multiply(A, C, AC);
matrix_multiply(B, C, BC);
int AB_AC_equal = 1, AB_BC_equal = 1;
for (int i = 0; i < DIM; i++) {
for (int j = 0; j < DIM; j++) {
if (AB[i][j] != AB_AC[i][j]) {
AB_AC_equal = 0;
}
if (AB[i][j] != AC_BC[i][j]) {
AB_BC_equal = 0;
}
}
}
printf("(1) A(B C) = AB AC, 验证结果:%s\n", AB_AC_equal ? "正确" : "错误");
printf("(2) (AB)C = A(BC), 验证结果:%s\n", AB_BC_equal ? "正确" : "错误");
// 计算 (3) 的验证结果
int ABC[DIM][DIM], ABC_T[DIM][DIM];
matrix_multiply(A, B, AB);
matrix_multiply(AB, C, ABC);
int CT[DIM][DIM], BT[DIM][DIM], AT[DIM][DIM];
for (int i = 0; i < DIM; i++) {
for (int j = 0; j < DIM; j++) {
CT[i][j] = C[j][i];
BT[i][j] = B[j][i];
AT[i][j] = A[j][i];
}
}
matrix_multiply(CT, BT, ABC_T);
matrix_multiply(ABC_T, AT, ABC_T);
int ABC_T_equal = 1;
for (int i = 0; i < DIM; i++) {
for (int j = 0; j < DIM; j++) {
if (ABC_T[i][j] != ABC[i][j]) {
ABC_T_equal = 0;
}
}
}
printf("(3) (ABC)T = CT BT AT, 验证结果:%s\n", ABC_T_equal ? "正确" : "错误");
return 0;
}
```
这段代码能够随机生成三个 3x3 同阶整数方阵 A、B、C,并验证三个公式。验证结果会在程序中输出。
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