C programs on array - addition and subtraction of matrices

Addition of two matrices using C Programming Language

#include <stdio.h>

void main()

{

int i, j, k, l, m, n;

float mat1[50][50], mat2[50][50], mat3[50][50];

clrscr();

printf("Program for Addition of matrix.\n\n");

printf("Enter row and column of 1st matrix (1 to 50,1 to 50) : ");

scanf("%d %d", &k, &l);

printf("\nEnter %d elements of 1st matrix\n", k*l);

for(i = 0; i < k; i++)

{

for(j = 0; j < l; j++)

scanf("%f", &mat1[i][j]);

}

printf("Enter row and column of 2nd matrix (1 to 50,1 to 50) : ");

scanf("%d %d", &m, &n);

printf("\nEnter %d elements of 2nd matrix\n", m*n);

for(i = 0; i < m; i++)

{

for(j = 0; j < n; j++)

scanf("%f", &mat2[i][j]);

}

if((k==m)&&(l==n))

{

for(i = 0; i < k; i++)

{

for(j = 0; j < l; j++)

{

mat3[i][j] = mat1[i][j] + mat2[i][j];

}

}

}

else

{

printf("\nSummation not possible\n");

}

printf("\n\t*** Matrix 1 ***\n");

for(i = 0; i < k; i++)

{

for(j = 0; j < l; j++)

printf("%8.2f", mat1[i][j]);

printf("\n");

}

printf("\n\t*** Matrix 2 ***\n");

for(i = 0; i < k; i++)

{

for(j = 0; j < l; j++)

printf("%8.2f", mat2[i][j]);

printf("\n");

}

printf("\n\t*** Result ***\n");

for(i = 0; i < k; i++)

{

for(j = 0; j < l; j++)

printf("%8.2f", mat3[i][j]);

printf("\n");

}

getch();

}

Subtraction of two matrices using C Programming Language

 #include <stdio.h>

void main()

{

int i, j, k, l, m, n;

float mat1[50][50], mat2[50][50], mat3[50][50];

clrscr();

printf("Program for subtraction of matrix.\n\n");

printf("Enter row and column of 1st matrix (1 to 50,1 to 50) : ");

scanf("%d %d", &k, &l);

printf("\nEnter %d elements of 1st matrix\n", k*l);

for(i = 0; i < k; i++)

{

for(j = 0; j < l; j++)

scanf("%f", &mat1[i][j]);

}

printf("Enter row and column of 2nd matrix (1 to 50,1 to 50) : ");

scanf("%d %d", &m, &n);

printf("\nEnter %d elements of 2nd matrix\n", m*n);

for(i = 0; i < m; i++)

{

for(j = 0; j < n; j++)

scanf("%f", &mat2[i][j]);

}

if ((k == m) && (l == n))

{

for(i = 0; i < k; i++)

{

for(j = 0; j < l; j++)

mat3[i][j] = mat1[i][j] - mat2[i][j];

}

}

else

{

printf("\nSubtraction not possible\n");

}

printf("\n\t*** Matrix 1 ***\n");

for(i = 0; i < k; i++)

{

for(j = 0; j < l; j++)

printf("%8.2f", mat1[i][j]);

printf("\n");

}

printf("\n\t*** Matrix 2 ***\n");

for(i = 0; i < k; i++)

{

for(j = 0; j < l; j++)

printf("%8.2f", mat2[i][j]);

printf("\n");

}

printf("\n\t*** Result ***\n");

for(i = 0; i < k; i++)

{

for(j = 0; j < l; j++)

printf("%8.2f", mat3[i][j]);

printf("\n");

}

getch();

}