题解 | 小乐乐求和
小乐乐求和
https://www.nowcoder.com/practice/ce0b2eacd3d04647831358c2876e44ff
#include <stdio.h>
int main()
{
long long int n;
scanf("%lld",&n);
long long int sum = 0;
int i;
for(i = 1; i <= n; i++)
{
sum += i;
}
printf("%lld",sum);
return 0;
}
