Check if a large number is divisible by 8 or not | C ++ program to find if a number is divisible by 8 or not ; Function to find that number divisible by 8 or not ; Empty string ; If there is single digit ; If there is double digit ; If number formed by last three digits is divisible by 8. ; Driver code
#include <bits/stdc++.h> NEW_LINE using namespace std ; bool check ( string str ) { int n = str . length ( ) ; if ( n == 0 ) return false ; if ( n == 1 ) return ( ( str [ 0 ] - '0' ) % 8 == 0 ) ; if ( n == 2 ) return ( ( ( str [ n - 2 ] - '0' ) * 10 + ( str [ n - 1 ] - '0' ) ) % 8 == 0 ) ; int last = str [ n - 1 ] - '0' ; int second_last = str [ n - 2 ] - '0' ; int third_last = str [ n - 3 ] - '0' ; return ( ( third_last * 100 + second_last * 10 + last ) % 8 == 0 ) ; } int main ( ) { string str = "76952" ; check ( str ) ? cout << " Yes " : cout << " No ▁ " ; return 0 ; }