Compilare: user.cpp: In function ‘bool verify(int)’: user.cpp:65:13: warning: unused variable ‘xxx’ [-Wunused-variable] int xxx = 3; ^ user.cpp:81:13: warning: unused variable ‘xx’ [-Wunused-variable] int xx = 0; ^ user.cpp:86:9: warning: unused variable ‘xxxx’ [-Wunused-variable] int xxxx = 0; ^ user.cpp: In function ‘int main()’: user.cpp:135:25: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘short int*’ [-Wformat=] scanf("%d\n", &n); ^ user.cpp: In function ‘bool verify(int)’: user.cpp:87:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int cauta()’: user.cpp:105:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘void citeste(int)’: user.cpp:110:12: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp: In function ‘int main()’: user.cpp:130:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("largestroot.in", "r", stdin); ^ user.cpp:131:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("largestroot.out", "w", stdout); ^ user.cpp:132:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^ user.cpp:135:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ /tmp/cc4jcg0u.o: In function `citeste(int)': user.cpp:(.text+0x4e7): warning: the `gets' function is dangerous and should not be used.