Definition of Armstrong number or what is an Armstrong number:
Definition according to c programming point of view:
Those numbers which sum of the cube of its digits is equal to that number are known as Armstrong numbers. For example 153 since 1^3 + 5^3 + 3^3 = 1+ 125 + 9 =153
Other Armstrong numbers: 370,371,407 etc.
In general definition:
Those numbers which sum of its digits to power of number of its digits is equal to that number are known as Armstrong numbers.
Example 1: 153
Total digits in 153 is 3
And 1^3 + 5^3 + 3^3 = 1 + 125 + 27 = 153
Example 2: 1634
Total digits in 1634 is 4
And 1^4 + 6^4 + 3^4 +4^4 = 1 + 1296 + 81 + 64 =1634
Examples of Armstrong numbers: 1, 2, 3, 4, 5, 6, 7, 8, 9, 153, 370, 371, 407, 1634,
8208, 9474, 54748, 92727, 93084, 548834, 1741725
Code 1:
1. Warp
to check a number is Armstrong
2. C program to check whether a number is Armstrong or not
3. Simple
c program for Armstrong number
4. Armstrong
number in c with output
#include<stdio.h>
int main(){
int num,r,sum=0,temp;
printf("Enter a
number: ");
scanf("%d",&num);
temp=num;
while(num!=0){
r=num%10;
num=num/10;
sum=sum+(r*r*r);
}
if(sum==temp)
printf("%d is an
Armstrong number",temp);
else
printf("%d is
not an Armstrong number",temp);
return 0;
}
Sample output:
Enter a number: 153
153 is an Armstrong number
The time complexity of a program that determines
Armstrong number is: O (Number of digits)
Code 2:
1. Write
a c program for Armstrong number
2. C
program for Armstrong number
generation
3. How
to find Armstrong number in c
4. Code
for Armstrong number in c
#include<stdio.h>
int main(){
int num,r,sum,temp;
int min,max;
printf("Enter
the minimum range: ");
scanf("%d",&min);
printf("Enter
the maximum range: ");
scanf("%d",&max);
printf("Armstrong
numbers in given range are: ");
for(num=min;num<=max;num++){
temp=num;
sum
= 0;
while(temp!=0){
r=temp%10;
temp=temp/10;
sum=sum+(r*r*r);
}
if(sum==num)
printf("%d
",num);
}
return 0;
}
Sample output:
Enter the minimum range: 1
Enter the maximum range: 200
Armstrong numbers in given range
are: 1 153
Code 3:
1. Armstrong
number in c using for loop
#include<stdio.h>
int main(){
int num,r,sum=0,temp;
printf("Enter a
number: ");
scanf("%d",&num);
for(temp=num;num!=0;num=num/10){
r=num%10;
sum=sum+(r*r*r);
}
if(sum==temp)
printf("%d is an
Armstrong number",temp);
else
printf("%d is
not an Armstrong number",temp);
return 0;
}
Sample output:
Enter a number: 370
370 is an Armstrong number
Logic of Armstrong number in c
Code 4:
1. C
program to print Armstrong numbers from 1 to 500
2. C
program for finding Armstrong
numbers
#include<stdio.h>
int main(){
int num,r,sum,temp;
for(num=1;num<=500;num++){
temp=num;
sum
= 0;
while(temp!=0){
r=temp%10;
temp=temp/10;
sum=sum+(r*r*r);
}
if(sum==num)
printf("%d
",num);
}
return 0;
}
Output:
1 153 370 371 407
0 comments:
Post a Comment