Compilare: user.cpp: In function ‘void T0(int)’: user.cpp:20:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[mid]<=k) st=mid+1; ^ user.cpp:25:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[mid]>k) --mid; ^ user.cpp:26:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[mid]==k) gasit=true; ^ user.cpp: In function ‘void T1(int)’: user.cpp:39:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[mid]<=k) st=mid+1; ^ user.cpp:44:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[mid]>k) --mid; ^ user.cpp: In function ‘void T2(int)’: user.cpp:56:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[mid]<k) st=mid+1; ^ user.cpp:62:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[mid]<k) ++mid; ^ user.cpp: In function ‘int main()’: user.cpp:74:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; ++i) scanf("%ud",&v[i]); ^ user.cpp:70:26: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(in,"r",stdin); ^ user.cpp:71:28: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(out,"w",stdout); ^ user.cpp:73:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ud",&n); ^ user.cpp:74:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1; i<=n; ++i) scanf("%ud",&v[i]); ^ user.cpp:76:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ud",&m); ^ user.cpp:80:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&Q,&k); ^