Compilare: user.cpp: In function ‘int main()’: user.cpp:23:13: warning: unused variable ‘t’ [-Wunused-variable] int t = 0; ^ user.cpp:13:12: warning: variable ‘poz’ set but not used [-Wunused-but-set-variable] int t, poz; ^ user.cpp:14:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d\n",&t); ^ user.cpp:20:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d\n",&N); ^ user.cpp:25:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%c%c", &ch1, &ch2); ^