#include <stdio.h>
#include <stdlib.h>

extern char* transform(char* buf, int change);

int main(){
	char* wsk;
	wsk=(char*)malloc(sizeof(char)*100);
	sprintf(wsk,"%s","abc  def DDD   gh ijk ");
	int change = 0;
	printf("Prepared string: %s\n", transform(buf, change));
}