Compilare: user.cpp: In function ‘void read()’: user.cpp:12:15: warning: unused variable ‘x’ [-Wunused-variable] int cnt=0,x,ok=0; ^ user.cpp:13:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&P); ^ user.cpp:15:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1;i<=P;i++) scanf("%d",&b[i]); ^ user.cpp: In function ‘int main()’: user.cpp:78:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("perioada01.in","r",stdin); ^ user.cpp:79:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("perioada01.out","w",stdout); ^