Program That Reads & Sums Data Values Until A Negative Value Is Read [C Programming]

#include<stdio.h>
int main()
{
    int i, sum=0;
    while(1)
    {
        printf("Enter a number: ");
        scanf("%d", &i);
        if(i>=0)
        {
            sum += i;
        }
        else
        {
            break;
        }
    }
    printf("Sum : %d", sum);
    return 0;
}