#include<iostream> #include<conio.h> using namespace std; int main(){ int a,b=۱,r=۱,c=۰,x,m; cout<<"please enter number :"; cin>>a; while(b<=a){ m=a; x=b; while(x!=۰){ r=m%x; m=x; x=r; } if(m==۱){ c++;} b++; } cout<<c; getch(); return ۰; }