Compilare: user.cpp: In function ‘int main()’: user.cpp:14:10: warning: unused variable ‘a’ [-Wunused-variable] int n, a, l, u, i, ok, p1, p2, s1, s2, intreg, rest; ^ user.cpp:14:22: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int n, a, l, u, i, ok, p1, p2, s1, s2, intreg, rest; ^ user.cpp:14:26: warning: variable ‘p1’ set but not used [-Wunused-but-set-variable] int n, a, l, u, i, ok, p1, p2, s1, s2, intreg, rest; ^ user.cpp:14:30: warning: variable ‘p2’ set but not used [-Wunused-but-set-variable] int n, a, l, u, i, ok, p1, p2, s1, s2, intreg, rest; ^ user.cpp:14:34: warning: unused variable ‘s1’ [-Wunused-variable] int n, a, l, u, i, ok, p1, p2, s1, s2, intreg, rest; ^ user.cpp:14:38: warning: unused variable ‘s2’ [-Wunused-variable] int n, a, l, u, i, ok, p1, p2, s1, s2, intreg, rest; ^ user.cpp:14:42: warning: unused variable ‘intreg’ [-Wunused-variable] int n, a, l, u, i, ok, p1, p2, s1, s2, intreg, rest; ^ user.cpp:14:50: warning: unused variable ‘rest’ [-Wunused-variable] int n, a, l, u, i, ok, p1, p2, s1, s2, intreg, rest; ^ user.cpp:15:26: warning: variable ‘ans’ set but not used [-Wunused-but-set-variable] double max, s, st, dr, ans, x; ^ user.cpp:16:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &n, &l, &u); ^ user.cpp:18:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lf", &c[i]); ^ user.cpp:22:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lf", &t[i]); ^