Compilare: user.cpp: In function ‘void solvetest(FILE*, FILE*)’: user.cpp:114:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < comp.size(); ++i) ^ user.cpp:97:30: 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:104:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &e[i].a, &e[i].b); ^ user.cpp: In function ‘int main()’: user.cpp:124:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &nteste); ^