View Compilation Error

0_0_7365410_28879.cpp:25: error: variable or field `print_dfs' declared void
0_0_7365410_28879.cpp:25: error: `v' was not declared in this scope
0_0_7365410_28879.cpp:26: error: expected `,' or `;' before '{' token
0_0_7365410_28879.cpp: In function `int main()':
0_0_7365410_28879.cpp:127: error: `print_dfs' cannot be used as a function