Write a C program to compute recursively a new string where all the adjacent chars are now separated by a "*", for a given string.

Write a C program to compute recursively a new string where all the adjacent chars are now separated by a "*", for a given string.

For example,

"hello" → "h*e*l*l*o"

Note:

Refer to the problem requirements.

Function specification:

void allstar(char *str)

Input and Output Format:

Input consists of a string.

The output consists of a string.

Refer sample input and output for formatting specifications.

[All text in bold corresponds to the input and the rest corresponds to output.]

Sample Input and Output:

Enter the string

hello

h*e*l*l*o

Implementation of the above problem:

#include<stdio.h>

#include<string.h>

#include<stdlib.h>

void allstar(char *str)

{

    if(strlen(str)<2)

    {

        return;

    }

    char *a;

    a=(char*)malloc(sizeof(char)*strlen(str));

    strcpy(a,str+1);

    *(str+1)='*';

    strcpy(str+2, a);

    allstar(str+2);

    return;

}

int main() 

{

   char *str;

   str= (char*)malloc(sizeof(char)*100);

   printf(" Enter the string\n");

   scanf("%s", str);

   allstar(str);

   printf("%s\n",str);

   return 0;

}

Thanks

Mukesh Rajput