drumuri2.cpp: In function 'void dfs(int)': drumuri2.cpp:21: warning: comparison between signed and unsigned integer expressions drumuri2.cpp: In function 'int main()': drumuri2.cpp:55: warning: comparison between signed and unsigned integer expressions drumuri2.cpp:86: warning: comparison between signed and unsigned integer expressions drumuri2.cpp:44: warning: unused variable 'nod' drumuri2.cpp:45: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result drumuri2.cpp:47: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result