#include <stdio.h>

int getinput(void);
void printmessage(int counter,int input);

int main(void){
  	int counter;
	int input;

	for(counter=0;counter<=200;counter++){
  		input=getinput();
		if(input==-1) end(0);
	printmessage(counter,input);
   	}
	return0;
}

int getinput(void){
  	int input;

	printf(“Enter an integer,or use –1 to exit:”);
	scanf(“%d”,&input);
	return input;
}

void printmessage(int counter,int input){  
  	static int lastnum=0;
  	counter++;
  
  	printf(“For number %d ,you entered %d (%d more than last time)\n”, 
		counter,input,input-lastnum);
  	lastnum=input;
}