C program for polynomial multiplication

Answer 1

/*==========================================

calculation of product of two matrix........

written by kr.gauraw

==========================================*/

#include<stdio.h>

#include<conio.h>

void main()

{

int mat1[3][3],mat2[3][3],mat3[3][3],i,j,k,sum;

clrscr();

printf("\nEnter values for 1st 3 x 3 matrix:\n");

for(i=0;i<3;i++)

{

for(j=0;j<3;j++)

{

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

}

}

printf("\nEnter values for 2nd 3 x 3 matrix:\n");

for(i=0;i<3;i++)

{

for(j=0;j<3;j++)

{

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

}

}

printf("\nThe 1st matrix you entered is :\n");

for(i=0;i<3;i++)

{

for(j=0;j<3;j++)

{

printf("%d\t",mat1[i][j]);

}

printf("\n");

}

printf("\nThe 2nd matrix you entered is:\n");

for(i=0;i<3;i++)

{

for(j=0;j<3;j++)

{

printf("%d\t",mat2[i][j]);

}

printf("\n");

}

for(i=0;i<3;i++)

{

for(j=0;j<3;j++)

{

sum=0;

for(k=0;k<3;k++)

{

sum=sum+mat1[i][k]*mat2[k][i];

}

mat3[i][j]=sum;

}

}

printf("\nThe product of two above matrix is:\n");

for(i=0;i<3;i++)

{

for(j=0;j<3;j++)

{

printf("%d\t",mat3[i][j]);

}

printf("\n");

}

printf("\n\n\nPress any key to exit.....");

getch();

}

Answer 2

you can try it by using matrix multiplication(also sum is given)........... the code is given below...

#include<stdio.h>

#include<conio.h>

void main()

{

int i, j, k, r1, r2, c1, c2, sum1;

int m1[10][10], m2[10][10], sum[10][10], mult[10][10];

printf("\n Enter the no of rows & column for matrix m1: ");

scanf("%d %d", &r1, &c1);

printf("\n Enter the elements for matrix m1 row wise: ");

for(i=0;i<r1;i++)

{

for(j=0;j<c1;j++)

scanf("%d", &m1[i][j]);

}

printf("\n Enter the no of row & column for matrix m2 :");

scanf("%d %d", &r2, &c2);

printf("\n enter the elememts for matrix m2 row wise: ");

for(i=0;i<r2;i++)

{

for(j=0;j<c2;j++)

scanf("%d", &m2[i][j]);

}

printf("\n The matrix m1 is: ");

for(i=0;i<r1;i++)

{

printf("\n");

for(j=0;j<c1;j++)

{

printf(" %3d", m1[i][j]);

}

}

printf("\n The matrix m2 is: ");

for(i=0;i<r2;i++)

{

printf("\n");

for(j=0;j<c2;j++)

{

printf(" %3d", m2[i][j]);

}

}

if(r1==r2 && c1==c2)

{

printf("\n The matrix sum is: ");

for(i=0;i<r1;i++)

{

printf("\n");

for(j=0;j<c1;j++)

{

sum[i][j]=0;

sum[i][j]=m1[i][j]+m2[i][j];

printf(" %3d", sum[i][j]);

}

}

}

else

printf("\n The matrix sum is not possible");

if(c1==r2)

{

printf("\n The matrix multiplication is: ");

for(i=0;i<r1;i++)

{

printf("\n");

for(j=0;j<c2;j++)

{

mult[i][j]=0;

sum1=0;

for(k=0;k<r1;k++)

{

mult[i][j]=m1[i][k]*m2[k][j];

sum1=mult[i][j]+sum1;

}

printf(" %3d", sum1);

}

}

}

else

printf("\n The multiplication is not possible");

getch();

}

### Samaresh Bera (IIT Kharagpur)

Answer 3

#include<stdio.h> #include<conio.h>

void main()

{

int a[10],b[10],m[10];

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

printf("\n Enter row of first matrix(<=10)");

scanf("%d",&n);

printf("Enter column of first matrix(<=10)");

scanf("%d",&m);

printf("enter row of second matrix(<=10)");

scanf("%d",&l);

printf("Enter column of second matrix(<=10)");

scanf("%d",&p);

printf("Enter first matrix");

for(i=0;i<=n-1;i++)

{

for(j=0;j<=m-1;j++)

{

scanf("%d",&a[i][j];

}

}

printf("Enter second matrix");

for(i=0;i<=l-1;i++)

Answer 4

Here it is

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int i,j,k,s,r1,r2,c1,c2;

int a[100][100],b[100][100],c[100][100];

cin>>r1>>c1>>r2>>c2;

if(c1==r2)

{ cout<<"arr1 ";

for(i=0;i<r1;i++)

{

for(j=0;j<c1;j++)

cin>>a[i][j];

}

cout<<"arr2 ";

for(i=0;i<r2;i++)

{

for(j=0;j<c2;j++)

cin>>b[i][j];

}

for(i=0;i<r1;i++)

{

for(j=0;j<c2;j++)

{

s=0;

for(k=0;k<c1;k++)

{

s=s+(a[i][k]*b[k][j]);

}

c[i][j]=s;

}

}

cout<<endl;

for(i=0;i<r1;i++)

{

for(j=0;j<c1;j++)

cout<<a[i][j]<<" ";

cout<<endl;

}

cout<<endl<<endl;

for(i=0;i<r2;i++)

{

for(j=0;j<c2;j++)

cout<<b[i][j]<<" ";

cout<<endl;

}

cout<<endl<<endl;

for(i=0;i<r1;i++)

{

for(j=0;j<c2;j++)

cout<<c[i][j]<<" ";

cout<<endl;

}

}

else

{

cout<<"error";

}

getch();

}

Answer 5

#include <stdio.h>

void mult_matrices(int a[][3], int b[][3], int result[][3]);

void print_matrix(int a[][3]);

int main()

{

int p[3][3] = {{1, 2, 3},{4, 5, 6}, {7, 8, 9}};

int q[3][3] = {{10, 11, 12}, {13, 14, 15}, {16, 17, 18}};

int r[3][3];

mult_matrices(p, q, r);

print_matrix(r);

}

void mult_matrices(int a[][3], int b[][3], int result[][3])

{

int i, j, k;

for(i = 0; i < 3; i++)

{

for(j = 0; j < 3; j++)

{

for(k = 0; k < 3; k++)

{

result[i][j] += a[i][k] * b[k][j];

}

}

}

}

void print_matrix(int a[][3])

{

int i, j;

for (i = 0; i < 3; i++)

{

for(j = 0; j < 3; j++)

{

printf("%d\t", a[i][j]);

}

printf("\n");

}

}

Answer 6

Polynomial Program