Compilare: user.cpp: In function ‘int isFirstNumberBigger()’: user.cpp:36:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = t1; i < number1.size(); ++i) ^ user.cpp: In function ‘void DivideBy2(int)’: user.cpp:57:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = t1; i < number1.size(); ++i) ^ user.cpp:71:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = t2; i < number2.size(); ++i) ^ user.cpp: In function ‘int main(int, const char**)’: user.cpp:96:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < strlen(buffer); ++i) ^ user.cpp:140:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = t1; i < number1.size(); ++i) ^ user.cpp:86:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &T); ^ user.cpp:95:31: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(buffer, 1024, f); ^