Permu

[No2024]

program to print permutations of a given Word
#include<stdio.h>
#include<conio.h>
#include<string.h>
void permute(char *s,int sp,int ep)
{
void swap(char *,char *);
int i;
if (sp==ep)
printf("%s\n",s);
else
{
for(i=sp;i<=ep;i++)
{
swap((s+sp),(s+i));
permute(s,sp+1,ep);
swap((s+sp),(s+i));
}
}
}
void swap(char *x,char *y)
{
char temp;
temp=*x;
*x=*y;
*y=temp;
}
void main()
{
char string[20];
int noc;
void permute (char *,int,int);
printf("\nEnter a string:");
gets(string);
noc=strlen(string);
permute (string,0,noc-1);
}