fork(9) download

copy

 #include<bits/stdc++.h>
 using namespace std;
 
 template<size_t row, size_t col>
 void print(int (&a)[row][col])
 {
   for(size_t i=0; i<row; i++)
   {
      for(size_t j=0; j<col; j++)
      {
         cout<<a[i][j]<<" ";
      }
      cout<<endl;
   }
 }
 
 int main()
 {
    int r, c;
    cin>>r>>c;
    int arr[r][c];
 
    for(int i=0; i<r; i++)
    {
       for(int j=0; j<c; j++)
       {
         cin>>arr[i][j];
       }
    }
    print(arr); //
    return 0;
 }
 

prog.cpp: In function ‘int main()’:
prog.cpp:30:14: error: no matching function for call to ‘print(int [r][c])’
     print(arr); //
              ^
prog.cpp:5:7: note: candidate: template<long unsigned int row, long unsigned int col> void print(int (&)[row][col])
  void print(int (&a)[row][col])
       ^~~~~
prog.cpp:5:7: note:   template argument deduction/substitution failed:
prog.cpp:30:14: note:   variable-sized array type ‘long int’ is not a valid template argument
     print(arr); //
              ^

Standard output is empty