Compilare: user.cpp: In function ‘void solve(char*, int&, int&)’: user.cpp:12:9: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int ok,x=0,semn=1; ^ user.cpp: In function ‘int main()’: user.cpp:49:24: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[305]’ [-Wformat=] scanf("%s\n",&s); ^ user.cpp:44:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecuatii2.in","r",stdin); ^ user.cpp:45:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecuatii2.out","w",stdout); ^ user.cpp:46:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:49:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n",&s); ^