Compilare: user.cpp: In function ‘int main()’: user.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<=T; i++) ^ user.cpp:26:34: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long unsigned int*’ [-Wformat=] fscanf(in, "%d%d", &A, &B); ^ user.cpp:26:34: warning: format ‘%d’ expects argument of type ‘int*’, but argument 4 has type ‘long unsigned int*’ [-Wformat=] user.cpp:22:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &T); ^ user.cpp:26:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &A, &B); ^