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smallkun 2025-03-28 08:36:03 +08:00
parent 5f169e30ac
commit 2a43e05b5f

@ -457,6 +457,35 @@ int main(){
方阵中主对角线、副对角线的索引和方阵的行、列有什么关系?
```
```c
#include <stdio.h>
int main(){
int n, s = 0;
scanf("%d", &n);
int a[n][n];
for(int i=0;i<n;i++){
for(int j=0;j<n;j++){
scanf("%d", &a[i][j]);
}
}
for(int i=0;i<n;i++){
for(int j=0;j<n;j++){
if(i != n-1 && j != n-1 && i+j != n-1){
s += a[i][j];
}
}
}
printf("%d\n", s);
return 0;
}
```
### 10 矩阵乘积