45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
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/*
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* C Program to check if a given matrix is an identity matrix
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*/
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#include <stdio.h>
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void main()
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{
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int a[10][10];
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int i, j, row, column, flag = 1;
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printf("Enter the order of the matrix A \n");
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scanf("%d %d", &row, &column);
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printf("Enter the elements of matrix A \n");
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for (i = 0; i < row; i++)
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{
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for (j = 0; j < column; j++)
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{
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scanf("%d", &a[i][j]);
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}
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}
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printf("MATRIX A is \n");
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for (i = 0; i < row; i++)
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{
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for (j = 0; j < column; j++)
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{
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printf("%3d", a[i][j]);
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}
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printf("\n");
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}
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/* Check for unit (or identity) matrix */
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for (i = 0; i < row; i++)
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{
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for (j = 0; j < column; j++)
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{
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if (a[i][j] != 1 && a[j][i] != 0)
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{
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flag = 0;
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break;
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}
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}
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}
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if (flag == 1 )
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printf("It is identity matrix \n");
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else
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printf("It is not a identity matrix \n");
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}
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