Compilare: user.cpp: In function ‘int main()’: user.cpp:15:24: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[110]’ [-Wformat=] scanf("%s",&sir); ^ user.cpp:9:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palind.in","r",stdin); ^ 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("palind.out","w",stdout); ^ user.cpp:13:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&t); ^ user.cpp:15:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&sir); ^ user.cpp:42:13: warning: ‘ch’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(s[0]!=ch){ ^