Compilare: user.cpp: In function ‘int main()’: user.cpp:23:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int x=0;x<a.size();x++){ ^ user.cpp:24:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(tru==b.size()) ^ user.cpp:47:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int x=0;x<ind.size();x++) ^ user.cpp:16:5: warning: variable ‘q’ set but not used [-Wunused-but-set-variable] int q,p; ^ user.cpp:16:7: warning: unused variable ‘p’ [-Wunused-variable] int q,p; ^ user.cpp:10:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.in","r",stdin); ^ user.cpp:11:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.out","w",stdout); ^