Compilare: user.cpp: In function ‘int main()’: user.cpp:37:18: warning: unused variable ‘bit’ [-Wunused-variable] int cnt = 0, bit, st; ^ user.cpp:37:23: warning: unused variable ‘st’ [-Wunused-variable] int cnt = 0, bit, st; ^ user.cpp:13:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d%d%d", &n, &m ,&nrt, &p); ^ user.cpp:28:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d", &x, &y); ^