Help in homework

Hello I have homework I do not where is the error in the program #include <iostream> #include <cstring> using namespace std; class book { private: char name[25]; int pages = 1; char auther[25]; char publisher[25]; public: void setname(char n[]) {strncpy(name, n,strlen(n));} int setpage(int n) {pages=n;} void setauther(char n[]) {strncpy(auther, n,strlen(n));} void setpublisher(char n[]) {strncpy(publisher, n,strlen(n));} char* getname() {return name;} int getpage() {return pages;} char* getauther() {return auther;} char* getpublisher() {return publisher;} }; int main() { book books[5]; books[1].setname("colors"); books[2].setname("be rich"); books[3].setname("stay strong"); books[4].setname("lose fat"); books[5].setname("Dance\n"); books[1].setpage(11); books[2].setpage(1); books[3].setpage(5); books[4].setpage(6); books[5].setpage(4); books[1].setauther(" Mohammed "); books[2].setauther(" Ahmed "); books[3].setauther(" Ali "); books[4].setauther(" Tallal "); books[5].setauther(" Faisal "); books[1].setpublisher(" ALNASHER "); books[2].setpublisher(" ALKALAM "); books[3].setpublisher(" SA'AEE "); books[4].setpublisher(" ALNSHRH "); books[5].setpublisher(" TBQ "); for (int i=1;i<=5;i++) { cout <<"Name: " << books[i].getname() << " pages: " << books[i].getpage() << " The Authers: " << books[i].getauther() << " The Publisher: " << books[i].getpublisher() << "\n"; } return 0; }