#include //conio.h
#include //stdio.h
void input(int [][],int ,int);
void output(int [][],int,int);
void add(int [][],int [][],int,int);
void diff(int [][],int [][],int,int);
void multi(int [][],int [][],int,int,int);
void main()
{
int a[10][10],b[10][10];
int ma,na,mb,nb;
int i,j,ch;
char yn;
clrscr();
flushall();
do
{
clrscr();
printf("\n\n\n\t\t\t\tOperations!!!");
printf("\n\n\t\t\t1.Addition");
printf("\n\n\t\t\t2.Subraction");
printf("\n\n\t\t\t3.Multiplication ");
flushall();
printf("\n\nEnter choice : " );
scanf("%d",&ch);
switch(ch)
{
case 1:
printf("Enter the order of the matrices : ");
scanf("%d %d",&ma,&na);
printf("Enter the input for matrix A : ");
input(a,ma,na);
printf("Enter the input for matrix B : ");
input(b,ma,na);
flushall();
add(a,b,ma,na);
break;
case 2:
printf("Enter the order of the matrices : ");
scanf("%d %d",&ma,&na);
printf("Enter the input for matrix A : ");
input(a,ma,na);
printf("Enter the input for matrix B : ");
input(b,ma,na);
flushall();
diff(a,b,ma,na);
break;
case 3:
printf("Enter the order of the Matrix A : ");
scanf("%d %d",&ma,&na);
printf("Enter the input for matrix A : ");
input(a,ma,na);
printf("Enter the order of the Matrix B : ");
scanf("%d %d",&mb,&nb);
printf("Enter the input for matrix B : ");
input(b,mb,nb);
flushall();
if(na==mb)
multi(a,b,ma,na,nb);
else
printf("This operation cannot be performed on these matirces!!!");
break;
case 4:
printf("Invalid choice!!!!");
}
printf("Do you want to perform another operation (y/n) ? ");
scanf("%c", &yn);
}while(yn=='y');
getch();
}
void input(int mat[10][10],int m,int n)
{
int i,j;
int x,y;
x=wherex();
y=wherey();
flushall();
for(i=0;i {
for(j=0;j {
gotoxy(x+j*4,y+i);
scanf("%d",&mat[i][j]);
}
}
}
void output(int mat[10][10],int m,int n)
{
int i,j;
for(i=0;i {
for(j=0;j {
printf("%d\t",mat[i][j]);
}
printf("\n");
}
}
void add(int a[10][10],int b[10][10],int m,int n)
{
int sum[10][10];
int i,j;
printf("The sum of the 2 matrice are : \n ");
for(i=0;i {
for(j=0;j {
sum[i][j]=a[i][j]+b[i][j];
}
}
output(sum,m,n);
}
void diff(int a[10][10],int b[10][10],int m,int n)
{
int d[10][10]={0};
int i,j;
flushall();
for(i=0;i {
for(j=0;j {
d[i][j]=a[i][j]-b[i][j];
}
}
output(d,m,n);
}
void multi(int a[10][10],int b[10][10],int ma,int na,int nb)
{
int i,j,k;
int m[10][10]={0};
flushall();
printf("The product of the 2 matrices are : \n");
for(i=0;i {
for(j=0;j {
for(k=0;k {
m[i][j]+=a[i][k]*b[k][j];
}
}
}
output(m,ma,nb);
}
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