Compilare: user.cpp: In function ‘int main()’: user.cpp:28:27: warning: unused variable ‘poz’ [-Wunused-variable] int t, n, i, k, a, b, poz; ^~~ user.cpp:29:30: warning: unused variable ‘fs’ [-Wunused-variable] char ch, e0, e1, e2, pr, fs; ^~ user.cpp:31:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d", &t); ^ user.cpp:33:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d", &n); ^ user.cpp:36:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lf", &p[i]); ^ user.cpp:44:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d ", &k); ^ user.cpp:53:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &m); ^