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Thread: C program for matrix manipulation

  1. #1
    Fuchcha FaaDoO Engineer rockingraju's Avatar
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    C program for matrix manipulation

    Matrix multiplication in c language: c program to multiply matrices (two dimensional array), this program multiplies two matrices which will be entered by the user. plz can anyone tell me a program for this..



  2. #2
    Fuchcha FaaDoO Engineer
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    Re: c program for matrix manipulation

    /*2.Program to multiply two matrices of orders to be provided by the user.*/


    #include <stdio.h>


    main()


    {


    int m,n,o,p;


    int i,j,k;


    int *mat1,*mat2,*mat3;


    printf("\n Enter the order of First matrix in the form mn : "); //getting order of 1st matrix
    scanf("%d%d",&m,&n); //read order of 1st matrix

    mat1=malloc(m*n*4); // creating dynamic memory for 1st matrix

    printf("\n Enter the order of Second matrix in the form mn : "); //getting order of 2nd matrix

    scanf("%d%d",&o,&p); //read order of 1st matrix

    if(n!=o)

    {


    printf("Multiplication is invalid\n"); //checking if multiplication of matrix is valid

    return 0;


    }


    else


    mat2=malloc(o*p*4);
    // creating dynamic memory for 2nd matrix
    mat3=malloc(m*p*4);


    printf("\nENTER MATRIX 1 DETAILS of order %d%d :-\n",m,n);


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


    scanf("%d",(mat1+i));

    printf("\nENTER MATRIX 2 DETAILS of order %d%d :-\n",n,p);

    for(i=0 ; i<n*p ; i++)


    scanf("%d",(mat2+i));
    for(i=0 ; i<m*p ; i++)

    *(mat3+i)=0;


    printf("\nThe multiplication of two matrices gives the following matrices:-\n");

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


    {

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


    {
    for(k=0 ; k<n ; k++)


    *(mat3+i*p+j)=*(mat3+i*p+j)+*(mat1+i*n+k)**(mat2+k*p+j);

    printf("%d\t",*(mat3+i*p+j));


    }


    printf("\n");


    }


    }

    ---------- Post added at 07:51 AM ---------- Previous post was at 07:48 AM ----------

    4.Program to calculate and print the sum of two given 3*3 matrices




    #include<stdio.h>
    main()
    {
    int i,j;
    int m1[3][3],m2[3][3],m3[3][3];
    for(i=0;i<3;i++)
    {
    for(j=0;j<3;j++)
    {
    printf("\nEnter the value of matrix 1[%d%d]",i+1,j+1);
    scanf("%d",&m1[i][j]);
    }
    }
    for(i=0;i<3;i++)
    {
    for(j=0;j<3;j++)
    {
    printf("\nEnter the value of matrix 2[%d%d]",i+1,j+1);
    scanf("%d",&m2[i][j]);
    }
    }
    for(i=0;i<3;i++)
    {
    for(j=0;j<3;j++)
    {
    m3[i][j]=m1[i][j]+m2[i][j];
    printf("%d\t",m3[i][j]);
    }
    printf("\n");
    }


    }