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recursion

 
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recursion, recursive function that lists all the two-elemnt subsets of a given se
international
post 3 Jul, 2008 - 02:48 PM
Post #1


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Joined: 26 Jun, 2008
Posts: 4
CODE
#include<stdio.h>
#define max 25

void two_ele_subs(char *str);

int main()
{
    char str[max];
    
    printf("Enter your string: ");
    scanf("%s",str);
    two_ele_subs(str);
    
return 0;    
}

void two_ele_subs(char *str)
{
    int i,j;
    for(i=0;i < strlen(str)-1; i++)
        for(j=i+1;j < strlen(str); j++)
            printf("{%c,%c}\n",str[i],str[j]);
    
}



this function lists all the two-element subsets of a given set of letters.
I didn't find the solution using a recursive function.
thank u in advance
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gabehabe
post 3 Jul, 2008 - 02:48 PM
Post #2


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What specific problems are you having?

The only issue I see at a glance is that you are using strlen() without #include <string.h>
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international
post 3 Jul, 2008 - 03:21 PM
Post #3


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QUOTE(gabehabe @ 3 Jul, 2008 - 02:48 PM) *

What specific problems are you having?

The only issue I see at a glance is that you are using strlen() without #include <string.h>


THANK U.

but this is not my problem.I want to implement the same function but using recursion.
thank u in advance.
how can transform this function to a recursive function that has the same purpose.
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