Compilare: user.cpp: In function ‘void solvetest(FILE*, FILE*)’: user.cpp:147:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < comp.size(); ++i) ^ user.cpp: In function ‘char getch(FILE*)’: user.cpp:18:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, BUFF, fin); ^ user.cpp: In function ‘int main()’: user.cpp:157:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &nteste); ^