题解 | #多组_一维数组_T组形式#

#include <stdio.h>

int main() {
    int t = 0;//测试组数
    scanf("%d", &t);
    int i = 0;//遍历
    int j = 0;
    int k = 0;
    long arr2[100000] = {0},sum = 0;//j的大小范围与t相同
    for (i = 0; i < t; i++)
    {   j = 0;//每次初始化
        sum = 0;
        scanf("%d", &j);
        for (k = 0; k < j; k++)//每一个小组内数组元素之和
        {
            scanf("%ld ", &arr2[k]);
            sum = sum + arr2[k];
        }
        printf("%ld\n", sum);//打印
    }
    return 0;
}