Compilare: user.cpp: In function ‘int factorial()’: user.cpp:32:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:65:21: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[10005]’ [-Wformat=] scanf("%s",&S); ^ user.cpp:67:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<strlen(S);j++) ^ user.cpp:58:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cifru5.in","r",stdin); ^ user.cpp:59:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cifru5.out","w",stdout); ^ user.cpp:61:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:65:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&S); ^