Compilare: user.cpp: In function ‘int main()’: user.cpp:76:15: warning: unused variable ‘s’ [-Wunused-variable] float s=1; ^ user.cpp:69:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ssnd.in", "r", stdin); ^ user.cpp:70:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ssnd.out", "w", stdout); ^ user.cpp:73:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:77:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ user.cpp: In function ‘void formam_ciurul()’: user.cpp:28:15: warning: iteration 1000000u invokes undefined behavior [-Waggressive-loop-optimizations] if(c[i]==0) ^ user.cpp:26:5: note: containing loop for(int i=2;i<=1000005;i++) ^