Programa en C para multiplicar dos matrices pasando una matriz a una función

En este ejemplo, aprenderá a multiplicar dos matrices y mostrarlas usando la función definida por el usuario.

Para comprender este ejemplo, debe tener el conocimiento de los siguientes temas de programación en C:

  • Matrices C
  • C Matrices multidimensionales
  • Pasar matrices a una función en C

Este programa le pide al usuario que ingrese el tamaño de la matriz (filas y columnas).

Luego, le pide al usuario que ingrese los elementos de esas matrices y finalmente agrega y muestra el resultado.

Para realizar esta tarea se realizan tres funciones:

  1. Para tomar elementos de matriz del usuario enterData()
  2. Para multiplicar dos matrices multiplyMatrices()
  3. Para mostrar la matriz resultante después de la multiplicación display()

Ejemplo: multiplicar matrices pasándolas a una función

 #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

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