Answer Posted / vignesh1988i

#include<stdio.h>
#include<conio.h>
void main()
{
char str[100],temp;
printf("enter the string :");
gets(str);
for(int i=0,j=0;str[j]!='\0';j++)
{
if(str[j]!=' ')
{
if(str[j+1]==' ')
{
temp=str[j];
str[j]=' ';
str[i]=temp;
i=i+2;
str[i-1]=' ';
}
else if(str[j+1]!=' ')
{
str[i]=str[j];
i++;
}
}
str[i]='\0';
printf("%s",str);
getch();
}

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