Compilare: user.cpp: In function ‘void euler(element)’: user.cpp:78:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<lista[x.vf].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:50:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &a, &b); ^ user.cpp: In function ‘void citire()’: user.cpp:62:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &n, &m); ^ user.cpp:65:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &tata); ^