计算1到5的合值

/*计算1到5的合值*/ 
#include <stdio.h>
int main(void)
{
	int no = 1;
	int sum = 0;
	do{
		sum = sum + no;
		no = no + 1;
	}while (no<=5);
	printf("1到5的合计值是%d.\n",sum);
	return(0);
}