C语言：自定义函数实现矩阵不靠边元素求和，行值动态输入

```c #include<stdio.h> #define M 10 #define N 4 void Input(float a[][N], int m); float Sum(float a[][N], int m); void Input(float a[][N], int m) { for (int i = 0; i < m; i++) { for (int j = 0; j < N; j++) { scanf("%f", &a[i][j]); } } } float Sum(float a[][N], int m) { float sum = 0; for (int i = 1; i < m - 1; i++) { for (int j = 1; j < N - 1; j++) { sum += a[i][j]; } } return sum; } ``` ######[AI问答 | 195点数解答 | 2025-12-10 23:11:47]