Compilare: user.cpp: In function ‘int main()’: user.cpp:37:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( len + lst.size() + str.length() <= n ) { ^ user.cpp:48:77: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 1; i <= ( n - len ) / ( lst.size() - 1 ); i ++ ) ^ user.cpp:20:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( in, "%d\n", &n ); ^