给定一个方阵 M[r][c],其中“r”是一定数量的行,“c”是列,使得 r = c,我们必须检查“M”是否是单位矩阵。< /p>
恒等矩阵
恒等矩阵也称为大小为nxn方阵的单位矩阵,其中对角元素的整数值为1,非对角元素的整数值为0
就像下面给定的示例 -
$$I1=\begin{bmatrix}1 \end{bmatrix},\ I2=\begin{bmatrix}1 & 0 \0 & 1 \end{bmatrix},\ I3=\begin{bmatrix}1 &0 & 0 \0 &1 & 0 \0 &0 &1 \end{bmatrix},\In=\begin{bmatrix}
1 &0 &0 &...&0 \
0 &1 &0 &...&0\
0 &0 &1 &...&0\
。 &. &. &...&.\
。 &. &. &...&.\
0 &0 &0 &...&1\
\end{bmatrix} $$
示例
Input: m[3][3] = { {1, 0, 0}, {0, 1, 0}, {0, 0, 1}} Output: yes Input: m[3][3] == { {3, 0, 1}, {6, 2, 0}, {7, 5, 3} } Output: no
算法
Start Step 1 -> declare function for finding identity matrix int identity(int num) declare int row, col Loop For row = 0 and row < num and row++ Loop For col = 0 and col < num and col++ IF (row = col) Print 1 Else Print 0 End End Step 2 -> In mAIn() Declare int size = 4 Call identity(size) Stop
示例
#include<stdio.h> int identity(int num){ int row, col; for (row = 0; row < num; row++){ for (col = 0; col < num; col++){ if (row == col) printf("%d ", 1); else printf("%d ", 0); } printf("
"); } return 0; } int main(){ int size = 4; identity(size); return 0; }
输出
1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1
以上就是C语言中的身份矩阵程序的详细内容。