Answer / syed fakheruddin ahmad

main()
{
int mat1[3][3] = {1,2,3,4,5,6,7,8,9};
int mat2[3][3] = {1,2,3,4,5,6,7,8,9};
int res[3][3];
int i,j,k;
for (i=0; i<3; i++)
for (j=0; j<3; j++)
res[i][j] = 0;
for (i=0; i<3; i++)
for (j=0; j<3; j++)
for (k=0; k<3; k++)
*(*(res + i) + j) += (*(*(mat1 + i) + k)) * (*(*(mat2 + k)
+ j));

for (i=0; i<3; i++)
{
for (j=0; j<3; j++)
printf ("%d\t", res[i][j]);
printf ("\n");
}
printf("\n");
}

Answer / ruchi

#include<stdio.h>
#include<conio.h>
int main()
{
int n,m,i,j,k;
int a[38][38],b[38][38],p[38][38];
printf("\nEnter the number of rows and coloumns ");
scanf("%d %d",&n,&m);
printf("\nEnter the elements of first matrix ");
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
{
scanf("%d",(*(a+i)+j));
}
}
printf("\nMatrix is ");
for(i=0;i<n;i++)
{
printf("\n");
for(j=0;j<m;j++)
{
printf("%d",*(*(a+i)+j));
printf("\t");
}
}
printf("\nEnter the elements of second matrix ");
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
{
scanf("%d",(*(b+i)+j));
}
}
printf("\nMatrix is ");
for(i=0;i<n;i++)
{
printf("\n");
for(j=0;j<m;j++)
{
printf("%d",*(*(b+i)+j));
printf("\t");
}
}
printf("\nAfter multiplication ");
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
{
p[i][j]=0;
for(k=0;k<n;k++)
{
p[i][j]+=a[i][k]*b[k][j];
}
}
}
for(i=0;i<n;i++)
{
printf("\n");
for(j=0;j<m;j++)
{
printf("%d",*(*(p+i)+j));
printf("\t");
}
}


getch();
}

Answer / rohan

#include<stdio.h>
#define row 3
#define col 3
#define col2 3
int main()
{
int a[row][col],b[col][col2],c[row][col2],i,j,k;
printf("Enter the element of first matrix:->\n");
for(i=1;i<=row;i++)
{
for(j=1;j<=col;j++)
{
scanf("%d",&a[i][j]);
}
}
printf("Enter the element of second matrix:->\n");
for(i=1;i<=col;i++)
{
for(j=1;j<=col2;j++)
{
scanf("%d",&b[i][j]);
}
}
/*printing of matrices*/
printf("\nMATRIX A\n");
for(i=1;i<=row;i++)
{
printf("\n");
for(j=1;j<=col;j++)
printf("%4d",a[i][j]);
}
printf("\nMATRIX B\n");
for(i=1;i<=col;i++)
{
printf("\n");
for(j=1;j<=col2;j++)
printf("%4d",b[i][j]);
}
/*multiplication*/
printf("\n\n");
for(i=1;i<=row;i++)
{
for(j=1;j<=col2;j++)
{
c[i][j]=0;
for(k=1;k<=col;k++)
c[i][j]=(c[i][j])+(a[i][k])*(b[k][j]);
}

}
/*printig of multiplication result*/
printf("MULTIPLICATION OF MATRIX A AND MATRIX B");
for(i=1;i<=row;i++)
{
printf("\n");
for(j=1;j<=col2;j++)
{
printf("%4d",c[i][j]);
}
}
printf("\n\n");
return 0;
}

Answer / asjad farrukh

void main()
{int *a,*b,*c,row1,col1,row2,col2;
clrscr();
printf("enter rows of 1at matrix");
scanf("%d",&row1);
printf("enter columns of 1at matrix");
scanf("%d",&col1);
printf("enter rows of 2nd matrix");
scanf("%d",&row2);
printf("enter columns of 2nd matrix");
scanf("%d",&col2);
if(col1!=row2)
{
printf("\nsorry\n");
}
else
{
a = (int *) malloc(row1*col1 * 2);
b = (int *) malloc(row2*col2 * 2);
c = (int *) malloc(col1*row2 * 2);

clrscr();
printf("enter 1st matrix \n");
insert(a,row1,col1);
getch();
clrscr();
printf("enter 2st matrix \n");
insert(b,row2,col2);
getch();
clrscr();
printf("1st matrix is\n");
display(a,row1,col1);
printf("\n2nd matrix is\n");
display(b,row2,col2);
prod(a,b,c,row1,col2);
printf("\nafter multiplication \n\n\n");
display(c,row1,col2);
}
getch();
}
insert(int *q,int r,int c)
{int i,j;
for(i=0;i<r;i++)
{
for(j=0;j<c;j++)
{ printf("\nEnter [%d][%d] element-- ",i,j);
scanf("%d",(q+i*c+j));
}
}
}

display(int *q,int r,int c)
{int i,j;
for(i=0;i<r;i++)
{
printf("\n");
for(j=0;j<c;j++)
{
printf("%d\t",*(q+i*c+j));
}
}
}
prod(int *p,int *q,int *z,int r1,int c2)
{int i,j,k;
for(i=0;i<r1;i++)
{
for(j=0;j<c2;j++)
{
*(z+i*c2+j)=0;
for(k=0;k<r1;k++)
{
*(z+i*c2+j)+=*(p+k*2+j)*(*(q+i*c2+k));
}
}

}
}

Answer / arum kumar mishra

9

Answer / tutu

#include<stdio.h>
#include<conio.h>
int main()
{
int mul(int,int);
int n1,n2,f=1,ans;
while(f==1)
{
printf("\n***MULTIPLICATION OF TWO NATURAL
NUMBERS***");
printf("\nEnter Two Numbers: ");
scanf("%d %d",&n1,&n2);
if(n1<=0||n2<=0)
{
printf("\nInvalid Choice...");
printf("\nDo You Want To Try
Again...\n1.Yes\n2.No");
scanf("%d",&f);
}
else
{
printf("\nAns = %d",mul(n1,n2),"\n");
printf("\nDo You Want To
Continue:\n1.Yes\n2.No\n");
scanf("%d",&f);
}
}
}
int mul(int a,int b)
{
return((b-1)*a+a);
}

Answer / shankey narang

// write a program to multipication of a matrix
#include<stdio.h>
#include<conio.h>
#include<alloc.h>
void main()
{
int *ptr1,*ptr2,*ptr3;
int m,n,i,j,k;
printf("enter m & n=");
scanf("%d%d",&m,&n);
ptr1=(int*)malloc((m*n)*sizeof(int));
ptr2=(int*)malloc((m*n)*sizeof(int));
ptr3=(int*)malloc((m*n)*sizeof(int));
printf("enter elements of 1st matrix=");
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
scanf("%d",((ptr1+i)+j)) ;
}
}
printf("enter elements of 2nd matrix=");
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
scanf("%d",((ptr2+i)+j)) ;
}
}
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
*((ptr3+i)+j)=0;
for(k=0;k<n;k++)
{
*((ptr3+i)+j)=*((ptr3+i)+j)+(*((ptr1+i)+j))*(*((ptr2+j)+k));
}
}
}
printf("multipication is=\n");
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
printf("%d\t",*((ptr3+i)+j)) ;
}
printf("\n");
}
getch();
}

Answer / sharanya

#include<stdio.h>
#include<conio.h>
#define row 50
#define column 50
void main()
{
int A[row][column],B[row][column],r1,r2,c1,c2,i,j;
void add(int A[row][column],int B[row][column],int c1,int r1);
clrscr();
printf("Enter Row and Column Sizes of A,B : ");
scanf("%d%d%d%d",&r1,&r2,&c1,&c2);
printf("Enter Elements Of A : ");
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
{
scanf("%d",&A[i][j]);
}
}
printf("Enter Elements of B : ");
for(i=0;i<r2;i++)
{
for(j=0;j<c2;j++)
{
scanf("%d",&B[i][j]);
}
}
if(r1==r2 && c1==c2);
else
printf("Addition is Not Possible.");
if(r2==c1)
{
multi(A,B,r1,r2,c2);
}
else
printf("Multiplication is Not Possible.");
}

void add(int A[row][column],int B[row][column],int r1,int c1)
{
int i,j;
printf("Addition Of Two Matrices: \n");
for(i=0;i<r1;i++)
{
for(j=0;j<c1;j++)
{
printf("\t%d",A[i][j]+B[i][j]);
}
print("\n");
}
}

void multi(int A[row][column],int B[row][column],int r1,int r2,int c2)
{
int C[row][column],i,j,k;
printf("Multiplication of Two Matrices : \n");
for(i=0;i<r1;i++)
{
for(j=0;j<c2;j++)
{
C[i][j]=0;
for(k=0;k<r2;k++)
C[i][j]=C[i][j]+A[i][k]*B[k][j];
printf("\t%d",C[i][j]);
}
printf("\n");
}
}

My teacher ask to make a program that can: Insert record in front Insert record at the end Insert in between Search node record Delete record in front Delete record at the end Delete record in between Using Data structure Linked List type. But I'm really confused about the codes and I can't go through. Please help Thanks in advance. Also here is my unfinished code if someone can make changes it will be more good.

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