#include <stdarg.h>
#include <stdio.h>
int sum_v(int n, va_list ap)
{
int i, s;
for (i = 0, s = 0; i < n; i++) s += va_arg(ap, int);
return s;
}
int sum_l(int n, ...)
{
va_list ap;
int s;
va_start(ap, n);
s = sum_v(n, ap);
va_end(ap);
return s;
}
int main()
{
printf("Sum is %d\n", sum_l(10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10));
return 0;
}