Compilare: user.cpp: In function ‘int main()’: user.cpp:21:9: warning: unused variable ‘vmax2’ [-Wunused-variable] int vmax2=-1, poz; ^ user.cpp:8:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmmdc2.in", "r", stdin); ^ user.cpp:9:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmmdc2.out", "w", stdout); ^ user.cpp:12:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &k); ^ user.cpp:16:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ user.cpp:37:5: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i=vmax; i>=1 && nr<=k; i-=poz) ^