Ndtyjky

I have to read 5 words from the keyboard and put them in a matrix. For example if I have the word RED, the letters will be split between the columns of the first row. R E D and so on.

This is my code but it exits after I scanf 5 letters

#include <stdio.h>

#include <stdlib.h>

#include <conio.h>

int main()

{

char mat[3][3];



for(int i=0; i<2; i++)

    for(int j=0;j<2;j++)

    {

        scanf("%s", &mat[i][j]);

    }



for(int i=0; i<2; i++)

    for(int j=0;j<2;j++)

    {

        printf("%st",mat[i][j]);

    }



return 0;

}

Since you haven't specified any size for the strings... I will presume they are of arbitrary length...

// Takes input using the 'stdin' stream...

char* read_input(void)

{

    char ch;

    size_t len = 0;

    size_t size = len + 2;

    char* str = realloc(NULL, size);

    if (!str)

        return str;

    while ((ch = fgetc(stdin)) != -1 && ch != 'n')

    {

        str[len++] = ch;

        if (len == size)

        {

            str = realloc(str, size += 2);

            if (!str)

                return str;

        }

    }

    str[len++] = '';

    return realloc(str, len);

}

This function will read the input, now we also need a function for checking if the string is a valid word... i.e, it contains only alphabets...

// Checks whether the specified string is alphabetic or not...

int is_alpha_string(char* str, char* err_msg)

{

    for (unsigned i = 0u; i < strlen(str); i++)

        if (!isalpha(str[i]))

        {

            fprintf(stderr, err_msg);

            return 0;

        }

    return 1;

}

After this, just do:

// The 'main()' function...

int main(void)

{

    char* matrix[5];

    for (unsigned i = 0u; i < 5u; i++)

    {

        printf("Enter your word here: ");

        matrix[i] = read_input();

        i -= !is_alpha_string(matrix[i], "Error! Entered text is not a valid word!nn");

    }

    for (int i = 0; i < 5; i++)

        printf("%sn", matrix[i]);

    return 0;

}

Edit: And don't forget to add these includes at the top:

#include <stdio.h>

#include <stdlib.h>

#include <ctype.h>

#include <string.h>