#include <stdio.h>
char *x;
char *y;
int array[3][4];
int value;
void mdump(char *x,char *y);
int two_d_fetch(int *b, int s, int m, int n,int i,int j);
void two_d_store(int *b, int s, int m, int n,int i,int j,int value);
int two_d_fetch_row_major(void *b,int s,int m,int n,int i,int j);
void two_d_store_rowMajor(void *b,int s,int m,int n,int i,int j,int value);

int main()
{
    char n[12]="Dinu Sandaru";

    x=&n[0];

    y=&n[11];
    char ch;
    char *pnt;
    pnt = &ch;
    *pnt='c';
    printf("the memory address of the variable-%p \n",pnt);
    printf("value of the variable-%c \n",*pnt);
    printf("location of the pointer-%p \n", &pnt);
    mdump(x,y);

    printf("\n");
    int *b;


    b=&array[0][0];
    int i;
    int j;
    int k;
        for(i=0;i<4;i++){
        for(j=0;j<3;j++){
            printf("Enter the number- \n");
            scanf("%d",&value);
            //k=sizeof(value);
            k=1;
            //two_d_store(b, k, 4, 3, i, j, value);
            two_d_store_rowMajor(b, k, 4, 3, i, j, value);
        }
        }
        printf("Given Matrix-\n");
    for(i=0;i<3;i++){
        for(j=0;j<4;j++){
            printf("%d ",two_d_fetch(b, k, 3, 4,  i,  j));
        }
        printf("\n");
        }

        mdump(&array[0][0],&array[2][3]);

        printf("\n");
        printf("Row major order\n");
        for(i=0;i<3;i++){
        for(j=0;j<4;j++){
    printf("%d ",two_d_fetch_row_major(b, k, 3, 4,  i,  j));
        }
        }
        printf("\n");
        printf("Column major order\n");
        for(i=0;i<4;i++){
        for(j=0;j<3;j++){
            printf("%d ",two_d_fetch(b, k, 3, 4,  j,  i));
        }
        }
    return 0;
}
void mdump(char *x,char *y)
{
    char *adrs;
    printf("Address               Words in Hexadecimal               ASCII character\n");
    printf("--------------------------------------------------------------------------------\n");
    for (adrs=x;adrs<=y;adrs++){
        printf("%p \t\t  %X\t\t\t\t\t  %d\n",adrs,*adrs,*adrs);
    }
}


void two_d_store(int *b,int  s,int  m,int n,int i, int j,int value){
    int *a;
    a=b+s*(n*i+j);
    *a=value;

}

int two_d_fetch(int *b, int s, int m, int n,int  i, int j){
    int *a;
    a=b+s*(n*i+j);
    return *a;

}


void two_d_store_rowMajor(void *b,int s,int m,int n,int i,int j,int value){
      int element = i*n+j;
      memcpy(b+element*s,&value,s);
}


int two_d_fetch_row_major(void *b,int s,int m,int n,int i,int j){
      int element = i*n+j;
      return b+element*s;
}