View Code of Problem 30

#include<stdio.h>
int main()
{
	int m,s;
	while(scanf("%d",&m)!=EOF)
	{
		s=0;
		for(int i=1;i<=m;i++)
		{
			s=s+i;
		}
		printf("%d\n",s);
	}
	return 0;
}