Summarize integers while user enters 0

while-sum.c

#include<stdio.h>

int main()
{
	int ctr = 1;//counter
	int sum = 0;//summary
	
	while(ctr != 0) {
		printf("Enter an integer: ");
		scanf("%d",&ctr);
		sum += ctr;//adjust xounter to summary
	}
	printf("\nSummary = %d",sum);
	getch();
}