Sum & Difference of the Matrices with C

```#include <stdio.h>
#include <stdlib.h>
void printmatA();
void printmatB();
void sum();
void diff();
int a[10][10], b[10][10], sumarray[10][10], arraydiff[10][10];
int i, j, row1, column1, row2, column2;
void main()
{
printf("Enter the order of the matrix A \n");
scanf("%d %d", &row1, &column1);
printf("Enter the order of the matrix B \n");
scanf("%d %d", &row2, &column2);
if (row1 != row2 && column1 != column2)
{
printf("Addition and subtraction are possible \n");
exit(1);
}
else
{
printf("Enter the elements of matrix A \n");
printf("MATRIX A is \n");
printmatA();
printf("Enter the elements of matrix B \n");
printf("MATRIX B is \n");
printmatB();
sum();
diff();
}
}
/*  Function to read a matrix A */
{
for (i = 0; i < row1; i++)
{
for (j = 0; j < column1; j++)
{
scanf("%d", &a[i][j]);
}
}
return;
}
/*  Function to read a matrix B */
{
for (i = 0; i < row2; i++)
{
for (j = 0; j < column2; j++)
{
scanf("%d", &b[i][j]);
}
}
}
/*  Function to print a matrix A */
void printmatA()
{
for (i = 0; i < row1; i++)
{
for (j = 0; j < column1; j++)
{
printf("%3d", a[i][j]);
}
printf("\n");
}
}
/*  Function to print a matrix B */
void printmatB()
{
for (i = 0; i < row2; i++)
{
for (j = 0; j < column2; j++)
{
printf("%3d", b[i][j]);
}
printf("\n");
}
}
/*  Function to do the sum of elements of matrix A and Matrix B */
void sum()
{
for (i = 0; i < row1; i++)
{
for (j = 0; j < column2; j++)
{
sumarray[i][j] = a[i][j] + b[i][j];
}
}
printf("Sum matrix is \n");
for (i = 0; i < row1; i++)
{
for (j = 0; j < column2; j++)
{
printf("%3d", sumarray[i][j]) ;
}
printf("\n");
}
return;
}
/*  Function to do the difference of elements of matrix A and Matrix B */
void diff()
{
for (i = 0; i < row1; i++)
{
for (j = 0; j < column2; j++)
{
arraydiff[i][j] = a[i][j] - b[i][j];
}
}
printf("Difference matrix is \n");
for (i = 0; i < row1; i++)
{
for (j = 0; j < column2; j++)
{
printf("%3d", arraydiff[i][j]);
}
printf("\n");
}
return;
}```

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