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Write a c++ program that generates armstrong numbers upto a limit n.

c++ program that generates armstrong numbers upto a limit n

13th Feb 2017, 8:18 AM
akashlina dewanjee
akashlina dewanjee - avatar
2 ответов
+ 1
Please try this /********************************************************* Print all armstrong numbers between given range find the no of digits find the sum of power of digits of each digit in the num compare the sum with original value *********************************************************/ #include <iostream> #include <math.h> using namespace std; //Function that returns the no of digits in the number long DigitCount(long x){ long c=0; do{ x = x / 10; c++; }while (x != 0); return c; } //Function returns the sum of digit raised to the power c long SumofDigits (long num, long p){ long r, s = 0; do{ r = num % 10; s = s + pow(r,p) ; num = num / 10; }while (x != 0); return s; } int main (void ){ long curr, res, start, end; cout<<"Enter start number: "; cin>>start; cout<<"Enter end number: ";cin>>end; if (start > end) { //perform swapping if the start value is bigger than end value int temp; temp = start; start = end; end = temp } for (curr=start;curr<=end;curr++){ res = SumofDigits(curr,DigitCount(curr)); if (res==curr) cout<<curr<<" "; } }
13th Feb 2017, 3:44 PM
देवेंद्र महाजन (Devender)
देवेंद्र महाजन (Devender) - avatar
0
#include <stdio.h> #include <conio.h> int getCubicSumOfDigits(int number); int main(){ int number, sum, counter; printf("Enter a number : "); scanf("%d", &number); printf("Armstrong numbers between 0 and %d\n", number); /* Iterate from 0 till N, and check for Armstrong number */ for(counter = 0; counter <= number; counter++){ sum = getCubicSumOfDigits(counter); if(sum == counter){ printf("%d\n", counter); } } getch(); return 0; } /* * Funtion to calculate the sum of cubes of digits of a number * getCubicSumOfDigits(123) = 1*1*1 + 2*2*2 + 3*3*3; */ int getCubicSumOfDigits(int number){ int lastDigit, sum = 0; while(number != 0){ lastDigit = number%10; sum = sum + lastDigit*lastDigit*lastDigit; number = number/10; } return sum; } Source : http://www.techcrashcourse.com/2014/10/c-program-generate-armstrong-numbers.html http://www.techcrashcourse.com/2017/01/cpp-program-print-armstrong-number-between-given-interval.html
15th Apr 2017, 5:12 AM
Arun Kumar
Arun Kumar - avatar