1 //二维数组每行输出平均值
 2 //2017.3.7
 3 #include <stdio.h>
 4 #include <stdlib.h>
 5 
 6 void Rand(int arr[][100], int  n);
 7 void OutputAvg(int arr[][100], int n);
 8 int main()
 9 {
10     int arr[100][100];
11     int n = 10;
12     int sum = 0;
13     //随机初始化数组
14     Rand(arr, n);
15     OutputAvg(arr, n);
16 
17     //处理函数 求出每一行的和
18     for (int i = 0; i < n; i++)
19     {
20         for (int j = 0; j < n; j++)
21         {
22             sum = sum + arr[i][j];//求出每一行的值
23             
24         }
25         printf("第%d行的平均值为%d\n", i + 1, sum);
26     }
27     system("pause");
28     return 1;
29 }
30 
31 void Rand(int arr[][100], int  n)
32 {
33     for (int i = 0; i < n; i++)
34     {
35         for (int  j = 0; j < n; j++)
36         {
37             arr[i][j] = rand() % 100 + 11;
38         }
39     }
40 }
41 
42 void OutputAvg(int arr[][100], int n)
43 {
44     for (int i = 0; i < n; i++)
45     {
46         for (int j = 0; j < n; j++)
47         {
48             printf("%-5d", arr[i][j]);
49         }
50         printf("\n");
51     }
52 }