Matrix Operations in C Language

Write a Matrix Operations program in C to compute addition or subtraction or multiplication of two matrices. Use functions to read, display and add or subtract or multiply the matrices.

Matrix Operations in C Code

 

#include<stdio.h>
#define ROWS 3
#define COLS 3

void readmatrix(int matrix[ROWS][COLS]);

void DisplayMatrix(int matrix[ROWS][COLS]);

void AddMatrices(int matrix1[ROWS][COLS], int matrix2[ROWS][COLS], int result[ROWS][COLS]);

void SubtractMatrices(int matrix1[ROWS][COLS], int matrix2[ROWS][COLS], int result[ROWS][COLS]);

void MultiplyMatrices(int matrix1[ROWS][COLS], int matrix2[ROWS][COLS], int result[ROWS][COLS]);
void main()
{

int md[ROWS][COLS], nd[ROWS][COLS];
int rs[ROWS][COLS];
int ch;
clrscr();
while(1)
{

printf(“Please select operation you wish to do\n”);

printf(“1. Enter fresh input, new matrices\n”);
printf(“2. Add two matrices\n”);
printf(“3. Subtract second matrix from first\n”);
printf(“4. Multiply first matrix to the second\n”);
printf(“5. Exit \n\n”);
printf(“Your Choice: “);
/* Read user’s choice into activity */
scanf(“%d”, &ch);

switch(ch)
{
case 1:

printf(“Please enter first matrix\n”);

readmatrix(md);

printf(“Please enter second matrix\n”);

readmatrix(nd);
break;
case 2:
AddMatrices(md, nd, rs);

printf(“The sum of two the matrices is\n”);

DisplayMatrix(rs);
break;
case 3:
SubtractMatrices(md, nd, rs);

printf(“The difference of the two matrices is\n”);

DisplayMatrix(rs);
break;
case 4:
MultiplyMatrices(md, nd, rs);

printf(“The product of the two matrices is\n”);

DisplayMatrix(rs);
break;
case 5: exit(0);

}
}
getch();

}

void readmatrix(int matrix[ROWS][COLS])
{
int i, j; 

printf(“Please enter a %d * %d matrix\n”, ROWS, COLS);

for(i = 0; i < ROWS; i++)
{
for(j = 0; j < COLS; j++)
{
scanf(“%d”, &matrix[i][j]);
}
}

}

void DisplayMatrix(int matrix[ROWS][COLS])
{
int i, j; 

for(i = 0; i < ROWS; i++)
{
for(j = 0; j < COLS; j++)
{
printf(“%d\t”, matrix[i][j]);
}

printf(“\n”);
}

}

void AddMatrices(int md[ROWS][COLS], int nd[ROWS][COLS], int rs[ROWS][COLS])
{
int i, j; 

for(i = 0; i < ROWS; i++)
{
for(j = 0; j < COLS; j++)
{
rs[i][j] = md[i][j] + nd[i][j];
}

}
}

void SubtractMatrices(int md[ROWS][COLS], int nd[ROWS][COLS], int rs[ROWS][COLS])
{
int i, j; 

for(i = 0; i < ROWS; i++)
{
for(j = 0; j < COLS; j++)
{
rs[i][j] = md[i][j] – nd[i][j];
}

}
}

void MultiplyMatrices(int md[ROWS][COLS], int nd[ROWS][COLS], int rs[ROWS][COLS])
{
int i, j, k; 

for(i = 0; i < ROWS; i++)
{
for(j = 0; j < COLS; j++)
{
rs[i][j] = 0;

for(k = 0; k < COLS; k++)
{
rs[i][j] = rs[i][j] + (md[i][k] * nd[k][j]);
}
}

}
}