/* write a program that reads a sequence of non-zero integers
first zero terminates the input
program finds the sum and average of the input numbers

Solution 2: USE LOOP FOR
Solution 1: USE LOOP WHILE

Sentinel controlled repetition

*/
#include<stdio.h>
int main(){
	//Solution 1 using loop while
	int num, count=0, sum=0;
	double ave;
	printf("enter a sequence of non-zero ints\n");
	scanf("%d",&num);
	while(num!=0){
		sum+=num;
		count++;
		scanf("%d",&num);
	}
	if(count>0){
		ave=(double)(sum)/count;
		printf("sum = %d, ave = %f\n", sum, ave);
	}
	else
		printf("no non zero ints\n");


	//Solution 2 using loop for
	count=0;
	sum=0;
	printf("enter a sequence of non-zero ints\n");
	for(scanf("%d",&num); num!=0; scanf("%d",&num)){
		sum+=num;
                count++;
	}
	if(count>0){
                ave=(double)(sum)/count;
                printf("sum = %d, ave = %f\n", sum, ave);
        }
        else
                printf("no non zero ints\n");


	//Solution 3 using loop for
	count=0;
        sum=0;
        printf("enter a sequence of non-zero ints\n");
	scanf("%d",&num);
	for(;num!=0;){
		sum+=num;
                count++;
		scanf("%d",&num);
	}
	if(count>0){
                ave=(double)(sum)/count;
                printf("sum = %d, ave = %f\n", sum, ave);
        }
        else
                printf("no non zero ints\n");

	return 0;
}