Compilare: user.cpp: In function ‘int caut(int)’: user.cpp:9:10: warning: statement has no effect [-Wunused-value] for(a;a;a/=2) ^ user.cpp: In function ‘int caut2(int)’: user.cpp:26:10: warning: statement has no effect [-Wunused-value] for(a;a<log;a*=2) ^ user.cpp: In function ‘int despart(int, int, int)’: user.cpp:22:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:35:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen("cautbin.in","r",stdin); ^ user.cpp:36:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cautbin.out","w",stdout); ^ user.cpp:38:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:40:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++)scanf("%d",v+i); ^ user.cpp:41:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&m); ^ user.cpp:44:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&p,&j); ^ user.cpp: In function ‘int caut2(int)’: user.cpp:25:16: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] int a=1,i=0,b; ^