76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
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/*
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* Develop functions to read a matrix, display a matrix and compute
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* product of two matrices.
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* Use these functions to read two MxN matrices and compute their
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* product & display the result
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*/
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#include <stdio.h>
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#define MAXROWS 10
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#define MAXCOLS 10
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void readMatrix(int arr[][MAXCOLS], int m, int n);
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void printMatrix(int arr[][MAXCOLS], int m, int n);
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void productMatrix(int array1[][MAXCOLS], int array2[][MAXCOLS],
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int array3[][MAXCOLS], int m, int n);
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void main()
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{
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int array1[MAXROWS][MAXCOLS], array2[MAXROWS][MAXCOLS],
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array3[MAXROWS][MAXCOLS];
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int m, n;
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printf("Enter the value of m and n \n");
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scanf("%d %d", &m, &n);
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printf("Enter Matrix array1 \n");
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readMatrix(array1, m, n);
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printf("Matrix array1 \n");
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printMatrix(array1, m, n);
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printf("Enter Matrix array2 \n");
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readMatrix(array2, m, n);
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printf("Matrix B \n");
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printMatrix(array2, m, n);
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productMatrix(array1, array2, array3, m, n);
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printf("The product matrix is \n");
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printMatrix(array3, m, n);
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}
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/* Input Matrix array1 */
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void readMatrix(int arr[][MAXCOLS], int m, int n)
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{
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int i, j;
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for (i = 0; i < m; i++)
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{
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for (j = 0; j < n; j++)
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{
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scanf("%d", &arr[i][j]);
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}
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}
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}
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void printMatrix(int arr[][MAXCOLS], int m, int n)
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{
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int i, j;
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for (i = 0; i < m; i++)
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{
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for (j = 0; j < n; j++)
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{
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printf("%3d", arr[i][j]);
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}
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printf("\n");
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}
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}
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/* Multiplication of matrices */
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void productMatrix(int array1[][MAXCOLS], int array2[][MAXCOLS],
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int array3[][MAXCOLS], int m, int n)
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{
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int i, j, k;
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for (i = 0; i < m; i++)
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{
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for (j = 0; j < n; j++)
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{
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array3[i][j] = 0;
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for (k = 0; k < n; k++)
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{
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array3[i][j] = array3[i][j] + array1[i][k] *
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array2[k][j];
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}
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}
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}
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}
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