Compilare: user.cpp: In function ‘int bsearch0(int, int, int)’: user.cpp:26:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[right] == value) ^ user.cpp:31:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(value >= v[(right+left) / 2]) ^ user.cpp:37:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(value < v[(right+left) / 2]) ^ user.cpp:44:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(value == v[right]) ^ user.cpp:46:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(value == v[left]) ^ user.cpp: In function ‘int bsearch1(int, int, int)’: user.cpp:62:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(value >= v[(right+left) / 2]) ^ user.cpp:68:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(value < v[(right+left) / 2]) ^ user.cpp:75:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[right] <= value) ^ user.cpp: In function ‘int bsearch2(int, int, int)’: user.cpp:94:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(value > v[(right+left) / 2]) ^ user.cpp:100:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(value <= v[(right+left) / 2]) ^ user.cpp:107:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[left] >= value) ^ user.cpp: In function ‘void read()’: user.cpp:13:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:15:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ user.cpp: In function ‘int bsearch0(int, int, int)’: user.cpp:51:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int bsearch1(int, int, int)’: user.cpp:83:1: warning: control reaches end of non-void function [-Wreturn-type] }