初学者，不用函数求平均数

问题遇到的现象和发生背景 全班30人每人七科成绩如下输入在一维数组里面 求全班总平均(210个数总平均 输出一个数)！不准用函数做! 每行第一个学号不能列入平均!

101,21,70,73,21,70,18,21,
102,47,56,95,65,19,74,12,
103,69,73,44,28,94,13,85,
104,66,46,86,75,63,83,77,
105,7,9,24,89,84,43,97,
106,94,80,60,89,55,60,60,
107,31,59,94,87,73,83,10,
108,83,79,13,61,88,1,0,
109,64,88,21,35,25,82,95,
110,3,58,37,84,79,58,57,
111,93,78,14,70,15,39,35,
112,59,54,21,95,7,21,35,
113,40,63,68,25,1,10,72,
114,54,63,76,54,49,73,24,
115,2,51,46,38,62,48,5,
116,17,37,69,65,56,59,1,
117,100,96,96,83,6,6,39,
118,34,69,35,25,4,69,51,
119,74,31,32,31,64,78,88,
120,99,20,52,95,76,96,97,
121,42,14,97,41,84,98,38,
122,19,66,64,78,63,11,66,
123,79,42,71,43,88,45,35,
124,32,44,60,90,43,27,89,
125,87,60,46,73,19,8,62,
126,34,88,1,5,94,24,15,
127,65,75,96,43,66,72,89,
128,12,10,78,86,57,79,2,
129,22,55,68,68,6,91,95,
130,49,28,10,54,53,40,26

用代码块功能插入代码，请勿粘贴截图

你的初始思路是什么？

总成绩吗？大致如下吧

#include<stdio.h>
 
int main()
{
    int a[]={101,21,70,73,21,70,18,21,102,47,56,95,65,19,74,12......};
    int s=0;
    for (int i = 0; i < 30*8; i++)
    {
        if (a[i]%8!=0)
        {
            s+=a[i];
        }
    }
    printf("%d\n",s/30);
    
    
    return 0;
}