Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
154531 汪义罗 矩阵行交换 C++ Compile Error 0 MS 0 KB 378 2026-05-30 14:58:39

Tests(0/0):

Code:

#include<iostream> using namespace std; int main(){ int a[100][100]; int n,m,sum=0; cin>>n>>m; //输入 //1 for(int i=1;i<=n;i++){ for(int j=1;j<=m;j++){ cin>>a[i][j]; } } for(int j=1;j<=m;j++){ if(i==m){ cout<<a[n][j]<<" "; }else if(i==n){ cout<<a[m][j]<<" "; }else{ cout<<a[i][j]<<" "; } } return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:16:7: error: 'i' was not declared in this scope
    if(i==m){
       ^
Main.cc:6:10: warning: unused variable 'sum' [-Wunused-variable]
  int n,m,sum=0;
          ^