Eroare de compilare: main.cpp:11:16: error: declaration of 'std::stack<int> Tarjan::stack' [-fpermissive] stack<int> stack; ^~~~~ In file included from /usr/include/c++/6/stack:61:0, from main.cpp:3: /usr/include/c++/6/bits/stl_stack.h:99:11: error: changes meaning of 'stack' from 'class std::stack<int>' [-fpermissive] class stack ^~~~~ main.cpp: In function 'int main()': main.cpp:82:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &n, &m); ^ main.cpp:85:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &x, &y); ^ Non zero exit status: 1