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  1. #include <stdio.h>
  2. #include<math.h>
  3.  //Compiler version gcc 6.3.0
  4.  
  5.  int armstrong(int);
  6.  int digits(int);
  7.  
  8.  int main(void)
  9.  {
  10.  	int n;
  11.  	printf("enter a number\n");
  12.  	scanf("%d",&n);
  13.  	if(armstrong(n)==n)
  14.  	{
  15.  		printf("its armstrong\n");
  16.  	}
  17.  	else{
  18.  		printf("not armstrong");
  19.  	}
  20.  }
  21. int armstrong(int a)
  22. {
  23. 	int c,temp,rem,result=0;
  24. 	c= digits(a);
  25. 	temp=a;
  26. 	while(temp>0){
  27. 		rem=temp%10;
  28. 		result+=pow(rem,c);
  29. 		temp/=10;
  30. 	}
  31. 	//printf("result = %d\n",result);
  32. 	if(result==a){
  33. 		return a;
  34. 	}
  35. 	else{
  36. 		return 0;
  37. 	}
  38. }
  39. int digits(int k)
  40. {
  41. 	int c,temp=k;
  42. 	while(temp>0){
  43. 		c++;
  44. 		temp/=10;
  45. 	}
  46. 	//printf("c=%d\n",c);
  47. 	return c;
  48. }
  49.  
Success #stdin #stdout 0s 9432KB
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enter a number
not armstrong
https://ideone.com/KzIXgE
language:
C (clang 8.0)
created:
7 years ago
visibility:
public

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