Calculate 1+...+100

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include<stdlib.h>

int main()
{
int i = 1,sum = 0;
lable:
sum += i;
i++;
if (i <= 100)
{
goto lable;
}
printf("sum=%d\n",sum);
system("pause");

}