题解 | 单组_二维数组
单组_二维数组
https://www.nowcoder.com/practice/4df606b6c3764d9c969f8759c8a4807b
#include <stdio.h> int main() { int m = 0, n = 0; scanf("%d%d", &m, &n); long arr[m][n]; long sum = 0;//总和 int i = 0, j = 0; for(i = 0; i < m; i++) { for(j = 0; j < n; j++) { scanf("%ld", &arr[i][j]); sum += arr[i][j]; } } printf("%ld", sum); return 0; }