View Compilation Error

0_0_25142132_9575.cpp: In function 'void print()':
0_0_25142132_9575.cpp:3:55: error: 'printf' was not declared in this scope
  printf("------------------------------------------\n");
                                                       ^
0_0_25142132_9575.cpp:4:16: error: 'n' was not declared in this scope
  for(int i=0;i<n;i++)
                ^
0_0_25142132_9575.cpp:6:17: error: 'm' was not declared in this scope
   for(int j=0;j<m;j++)
                 ^
0_0_25142132_9575.cpp:8:17: error: 'vis' was not declared in this scope
    printf("%d ",vis[i][j]);
                 ^