Compilare: user.cpp: In function ‘int main()’: user.cpp:19:26: warning: unused variable ‘t1’ [-Wunused-variable] int n, k, aux, aux2, t1, t2, hmax; ^~ user.cpp:19:30: warning: unused variable ‘t2’ [-Wunused-variable] int n, k, aux, aux2, t1, t2, hmax; ^~ user.cpp:22:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( fin, "%d%d", &n, &k ); ^ user.cpp:27:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( fin, "%d", &h[i] ); ^