Compacting a string

/* string2.c  -- Compacting sequences of spaces in a string.
We use two different methods
*/

#include <stdio.h>
#define MAXBUFF 128

int getline(char line[], int nmax);
int compact1(char line[]);
int compact2(char line[]);

int main(void) {
char buffer1[MAXBUFF];
char buffer2[MAXBUFF];
int len;

len = getline(buffer1, MAXBUFF);
printf("You entered : %s\n", buffer1);
strcpy(buffer2,buffer1);
printf("Which is : %s\n", buffer2);

len=compact1(buffer1);
printf("compact1: len=%d,  %s\n",len, buffer1);
len=compact2(buffer2);
printf("compact2: len=%d,  %s\n",len, buffer2);
}

int getline(char line[], int nmax)
/* It prompts user and reads up to nmax 
* characters into line. It returns number 
* of characters read. ['\n' terminates the line]
*/
{
int len;
char c;

len = 0;
printf("Enter a string [CR to exit]: ");
while(((c=getchar())!='\n') && len<nmax-1)
line[len++]=c;
line[len]='\0';
return len;
}

int compact1(char line[])
/* It replaces streaks of spaces in line by a 
* single space. It returns lenght of resulting string.
*/
{
int cursor=0;      /* Cursor on the line */
int prevspace = 0; /* True iff preceding position was with a space */
int lcv=0;         /* Other cursor */

if(line[cursor]=='\0')
return 0;
do{
if((line[cursor]==' ')&&prevspace){
/*If we have a space preceded by a space, move rest of string
left one position */
for(lcv=cursor;line[lcv];lcv++)
line[lcv]=line[lcv+1];
}else
prevspace=(line[cursor++]==' ');
}while(line[cursor]);
return cursor;
}

int compact2(char line[])
/* It replaces streaks of spaces in line by a 
* single space. It returns lenght of resulting string.
*/
{
int cursor=0;      /* Cursor on the line */
int prevspace = 0; /* True iff preceding position was with a space */
int lcv = 0;       /* Where we copy characters to */

do{
if(!((line[cursor]==' ')&&prevspace)){
line[lcv++]=line[cursor];
prevspace=(line[cursor]==' ');
}
}while(line[cursor++]);
return(lcv-1); /*We need the -1 since it counts also the '\0' */
}