iepuri.cpp:12: error: expected constructor, destructor, or type conversion before '<' token iepuri.cpp: In function 'void dfs(int, int)': iepuri.cpp:19: error: 'sons' was not declared in this scope iepuri.cpp:28: error: 'sons' was not declared in this scope iepuri.cpp:40: error: 'sons' was not declared in this scope iepuri.cpp: In function 'int main()': iepuri.cpp:63: error: 'sons' was not declared in this scope iepuri.cpp:55: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result iepuri.cpp:59: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result