Compilare: user.cpp: In function ‘int solve(int&, int)’: user.cpp:74:13: warning: unused variable ‘lenn’ [-Wunused-variable] int lenn = v.size(); ^ user.cpp:23:9: warning: unused variable ‘chr’ [-Wunused-variable] int chr; ^ user.cpp: In function ‘int main()’: user.cpp:81:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("expresie2.in","r",stdin); ^ user.cpp:82:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("expresie2.out","w",stdout); ^ user.cpp:83:14: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s+1); ^ user.cpp: In function ‘int solve(int&, int)’: user.cpp:30:17: warning: ‘local’ may be used uninitialized in this function [-Wmaybe-uninitialized] int local; ^ user.cpp:30:17: warning: ‘local’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:30:17: warning: ‘local’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp: In function ‘int main()’: user.cpp:30:17: warning: ‘local’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:30:17: warning: ‘local’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:30:17: warning: ‘local’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:30:17: warning: ‘local’ may be used uninitialized in this function [-Wmaybe-uninitialized] /tmp/cc1cdsV0.o: In function `main': user.cpp:(.text.startup+0x56): warning: the `gets' function is dangerous and should not be used.