Compilare: user.cpp: In function ‘int main()’: user.cpp:120:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d", &n, &b, &c); ^ user.cpp:124:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]); ^ user.cpp:135:9: warning: ‘d’ may be used uninitialized in this function [-Wmaybe-uninitialized] int d; ^