Dalam contoh ini, Anda akan belajar mengalikan dua matriks dan menampilkannya menggunakan fungsi yang ditentukan pengguna.
Untuk memahami contoh ini, Anda harus memiliki pengetahuan tentang topik pemrograman C berikut ini:
- C Array
- C Array Multidimensi
- Meneruskan array ke fungsi di C
Program ini meminta pengguna untuk memasukkan ukuran matriks (baris dan kolom).
Kemudian, meminta pengguna untuk memasukkan elemen dari matriks tersebut dan akhirnya menambahkan dan menampilkan hasilnya.
Untuk melakukan tugas ini dibuat tiga fungsi:
- Untuk mengambil elemen matriks dari pengguna
enterData() - Untuk mengalikan dua matriks
multiplyMatrices() - Untuk menampilkan matriks resultan setelah perkalian
display()
Contoh: Mengalikan Matriks dengan Meneruskannya ke Fungsi
#include void enterData(int firstMatrix()(10), int secondMatrix()(10), int rowFirst, int columnFirst, int rowSecond, int columnSecond); void multiplyMatrices(int firstMatrix()(10), int secondMatrix()(10), int multResult()(10), int rowFirst, int columnFirst, int rowSecond, int columnSecond); void display(int mult()(10), int rowFirst, int columnSecond); int main() ( int firstMatrix(10)(10), secondMatrix(10)(10), mult(10)(10), rowFirst, columnFirst, rowSecond, columnSecond, i, j, k; printf("Enter rows and column for first matrix: "); scanf("%d %d", &rowFirst, &columnFirst); printf("Enter rows and column for second matrix: "); scanf("%d %d", &rowSecond, &columnSecond); // If colum of first matrix in not equal to row of second matrix, asking user to enter the size of matrix again. while (columnFirst != rowSecond) ( printf("Error! column of first matrix not equal to row of second."); printf("Enter rows and column for first matrix: "); scanf("%d%d", &rowFirst, &columnFirst); printf("Enter rows and column for second matrix: "); scanf("%d%d", &rowSecond, &columnSecond); ) // Function to take matrices data enterData(firstMatrix, secondMatrix, rowFirst, columnFirst, rowSecond, columnSecond); // Function to multiply two matrices. multiplyMatrices(firstMatrix, secondMatrix, mult, rowFirst, columnFirst, rowSecond, columnSecond); // Function to display resultant matrix after multiplication. display(mult, rowFirst, columnSecond); return 0; ) void enterData(int firstMatrix()(10), int secondMatrix()(10), int rowFirst, int columnFirst, int rowSecond, int columnSecond) ( int i, j; printf("Enter elements of matrix 1:"); for(i = 0; i < rowFirst; ++i) ( for(j = 0; j < columnFirst; ++j) ( printf("Enter elements a%d%d: ", i + 1, j + 1); scanf("%d", &firstMatrix(i)(j)); ) ) printf("Enter elements of matrix 2:"); for(i = 0; i < rowSecond; ++i) ( for(j = 0; j < columnSecond; ++j) ( printf("Enter elements b%d%d: ", i + 1, j + 1); scanf("%d", &secondMatrix(i)(j)); ) ) ) void multiplyMatrices(int firstMatrix()(10), int secondMatrix()(10), int mult()(10), int rowFirst, int columnFirst, int rowSecond, int columnSecond) ( int i, j, k; // Initializing elements of matrix mult to 0. for(i = 0; i < rowFirst; ++i) ( for(j = 0; j < columnSecond; ++j) ( mult(i)(j) = 0; ) ) // Multiplying matrix firstMatrix and secondMatrix and storing in array mult. for(i = 0; i < rowFirst; ++i) ( for(j = 0; j < columnSecond; ++j) ( for(k=0; k
Output
Enter rows and column for first matrix: 3 2 Enter rows and column for second matrix: 3 2 Error! column of first matrix not equal to row of second. Enter rows and column for first matrix: 2 3 Enter rows and column for second matrix: 3 2 Enter elements of matrix 1: Enter elements a11: 3 Enter elements a12: -2 Enter elements a13: 5 Enter elements a21: 3 Enter elements a22: 0 Enter elements a23: 4 Enter elements of matrix 2: Enter elements b11: 2 Enter elements b12: 3 Enter elements b21: -9 Enter elements b22: 0 Enter elements b31: 0 Enter elements b32: 4 Output Matrix: 24 29 6 25
