Answer to Question #223674 in C for Jack

Question

1. Write a C Program to find sum and subtraction of two matrices using functions & dynamic memory allocation.

2. Write a C program to check two matrices are identical or not using functions & dynamic memory allocation.

Answer 1

#include <stdio.h>


#define MAX_SIZE 3


int A[MAX_SIZE][MAX_SIZE] = {{1,2,3},{4,5,6},{7,8,9}};
int B[MAX_SIZE][MAX_SIZE] = {{1,3,11},{10,1,2},{3,1,5}};
int Y[MAX_SIZE][MAX_SIZE];


void MatrixAddition(void)
{
	int c,r,i,j;
	// Initializing elements of matrix mult to 0.
    for(i = 0; i < MAX_SIZE; ++i) for(j = 0; j < MAX_SIZE; ++j) Y[i][j]=0;
    for(i = 0; i < MAX_SIZE; ++i)
    {
        for(j = 0; j < MAX_SIZE; ++j)
        {
                Y[i][j] = A[i][j] + B[i][j];
		}
	}
	printf("\n\nDisplaying the Adition of Matrices: A + B: \n");
    for(r=0;r<MAX_SIZE;r++)
    {
    	for(c=0;c<MAX_SIZE;c++)
    	{
			printf("\t%3d",Y[r][c]);
//			cout<<"\t"<<Y[r][c];
		}
		printf("\n");
	}
}




void MatrixSubstraction(void)
{
	int c,r,i,j;
    // Initializing elements of matrix mult to 0.
    for(i = 0; i < MAX_SIZE; ++i) for(j = 0; j < MAX_SIZE; ++j) Y[i][j]=0;
    for(i = 0; i < MAX_SIZE; ++i)
    {
        for(j = 0; j < MAX_SIZE; ++j)
        {
                Y[i][j] = A[i][j] - B[i][j];
		}
	}
	printf("\n\nDisplaying the Substraction of Matrices: A - B: \n");
    for(r=0;r<MAX_SIZE;r++)
    {
    	for(c=0;c<MAX_SIZE;c++)
    	{
			printf("\t%3d",Y[r][c]);
//			cout<<"\t"<<Y[r][c];
		}
		printf("\n");
	}


}


void CheckIdentical(void)
{
	int Flag=1;
	int c,r,i,j;
    for(i = 0; i < MAX_SIZE; ++i)
    {
        for(j = 0; j < MAX_SIZE; ++j)
        {
                if(A[i][j] != B[i][j]) Flag=0;
		}
	}
	if(Flag==1) printf("\n\nThe two matrices A and B are Identical");
	else		printf("\n\nThe two matrices A and B are NOT Identical");
}


main(void)
{
	int c,r,i,j;


	printf("\nMatrix-A: \n");
    for(r=0;r<MAX_SIZE;r++)
    {
    	for(c=0;c<MAX_SIZE;c++)
    	{
			printf("\t%3d",A[r][c]);
		}
		printf("\n");
	}


	printf("\n\nMatrix-B: \n");
    for(r=0;r<MAX_SIZE;r++)
    {
    	for(c=0;c<MAX_SIZE;c++)
    	{
			printf("\t%3d",B[r][c]);
		}
		printf("\n");
	}
	
	MatrixAddition();
	MatrixSubstraction();
	CheckIdentical();
    return (0);
}