C program to replace multiple spaces with a single space

Program to replace multiple spaces between two words in a string by a single space

#include<stdio.h>

#include<conio.h>

void main()

{

char s[50];

char *str=s;

int i,j;

clrscr();

printf("Enter the String:\n");

gets(s);

for(i=0;*(str+i)!='\0';i++)

   {

   if(*(str+i)==' '&*(str+i+1)==' ')

   {

   for(j=i;*(str+j)!='\0';j++)

     {

 *(str+j)=*(str+j+1);

 }

 i--;

   }

   }

     printf("\n%s",str);

   getch();

}