Xtykutl

Q2: Implelment the follwoing function ArrPrintMatrix(char *(p)[7]) which prints the content of the matrix[m][7] ={"SHAHBAZ","AYAZ"} in to 3x3 Matrix

Sample Output

S H A                      

H B A                       

Z A Y ..

My question is : here is code only problem i am getting is a space after one name is completed..how to remove that space . I have this question in my assignments , that have to be submitted on sunday (11-11-18)..
My code is:

#include<stdio.h>

int main()

{

    void ArrPrintMatrix(char *p);//function declaration

    char matrix[2][8] ={"SHAHBAZ","AYAZ"};//2d array initiliation

    ArrPrintMatrix(&matrix[0][0]);//calling function with base address



}



void ArrPrintMatrix(char *p)

{

    int i;

    for(i=0;i<16;i++)

    {

        if(i>=9)//since 3 by 3 matrix is required

            break;

        if(i==3||i==6||i==9)//changing line since 3 by 3 matrix is needed

            printf("n");

        printf("%c ",*(p+i));//prininting chracters



    }

}

As a follow-on to my other answer, if you do use my logic to skip over the '' that terminates the strings, you will need to use a different variable to keep track of how many characters you've actually printed, and just let i keep track of where you are in the input string(s). Like so:

#include<stdio.h>

int main()

{

    void ArrPrintMatrix(char *p);//function declaration

    char matrix[2][8] ={"SHAHBAZ","AYAZ"};//2d array initiliation

    ArrPrintMatrix(&matrix[0][0]);//calling function with base address



}



void ArrPrintMatrix(char *p)

{

    int i, j;

    for(i=0, j=0;i<16;i++)

    {

        if(j>=9)//since 3 by 3 matrix is required

            break;

        if(j==3||j==6||j==9)//changing line since 3 by 3 matrix is needed

            printf("n");

        if (*(p+i)==0) continue; //don't try to print the trailing ''

        printf("%c ",*(p+i));//prininting chracters

        j++; //increment counter of characters actually printed



    }

}

Output:

S H A 

H B A 

Z A Y 

Note the use of the j variable, and how it is incremented with j++ only after actually printing a character.

You should use char (*p)[8] not char* p

The following code could wrok:

#include<stdio.h>

int main()

{

    void ArrPrintMatrix(char (*p)[8]);//function declaration

    char matrix[2][8] ={"SHAHBAZ","AYAZ"};//2d array initiliation

    ArrPrintMatrix(matrix);//calling function with base address



}

void ArrPrintMatrix(char (*p)[8])

{

    // i will point to one of the strings in the set of strings

    // j will point into the string we are inspecting

    // k will count how many characters we have printed

    int i = 0, j = 0, k = 0;



    // we only need to print the first 9 printable characters we find

    while (k != 9)

    {

        // if we have reached the end of an input string (the null-terminator),

        // then move on to the next element in the array, and reset

        // the string pointer to the beginning of the new string

        if (p[i][j] == '') {

            ++i;

            j = 0;

        }



        // print the character we are now pointing at,

        // and increment the string pointer

        printf("%c ", p[i][j++]);



        // keep count of how many characters we have printed

        ++k;



        // if k is divisible by 3, start a new row

        if(k%3 == 0)

            printf("n");

    }

}

What you are missing is that there is a trailing '' at the end of SHAHBAZ, which you are also "printing", but because '' does not have a character representation, you are seeing what looks like an 'extra' space.

Here is the smallest change I can think of to address this exact problem; add:

if (*(p+i)==0) continue; //don't try to print the trailing ''

just above your existing line:

printf("%c ",*(p+i));//prininting chracters

Output:

S H A 

H B A 

Z A 

There are other things I would do differently than how you are doing them, but this addresses your exact question, using your coding style.