题解 | #牛牛学数列4#
牛牛学数列4
https://www.nowcoder.com/practice/586b114f52034688879342ba45779081
#include <stdio.h>
int main() {
int n = 0;
scanf("%d", &n);
int sum = 0; //外层循环变量
for (int i = 1; i <= n; i++) {
int t = 0; //内层循环变量-->计算1+2+...+n
for (int j = 1; j <= i; j++) {
t = t + j;
}
sum = sum + t;
}
printf("%d", sum);
return 0;
}
