Armstrong Number Program In C (5 Simple Ways)
In this article, we are going to write an Armstrong number program in C
We will make this program in the following way -:
- C Program To Find Armstrong Numbe Using between 1 to 1000 (Using For Loop)
- C Program To Check Armstrong Number Using While Loop
- C Program To Check Armstrong Number Using Do While Loop
- C Program To Check Armstrong Number Using Function
- C Program To Check Armstrong Number Using Recursion
To make this program, we will use the following concept given below.
If you do not know about these topics well, then you may not understand this program, so you should know about them in detail from the link given above.
Now without wasting time let’s start programming.
Armstrong Number Program In C Using For Loop
Algorithm
- Program Start
- Declare Variable
- Input Numbers
- Check Condition
- Print output according to condition
- Program End
Program
//C Program To Check Armstrong Number Using For Loop
#include<conio.h>
int main()
{
int n,r,s,x,num;
printf("Enter a number : ");
scanf("%d",&num);
printf("armstrong number Between 1 to %d :\n",num );
for(n=1;n<=num;n++)
{
x=n;
s=0;
while(x!=0)
{
r=x%10;
s=s+(r*r*r);
x=x/10;
}
if(s==n)
printf("%d\n",n);
}
return 0;
}
Output
Enter a number : 1000
armstrong number between 1 to 1000 :
1
153
370
371
407Armstrong Number Program In C Using While Loop
Program
//C Program To Check Armstrong Number Using While Loop
#include<stdio.h>
void main()
{
int n,r,sum=0,t;
printf("Enter the number : ");
scanf("%d",&n);
t=n;
while(n>0)
{
r=n%10;
sum=sum+(r*r*r);
n=n/10;
}
if(t==sum)
printf("armstrong number ");
else
printf("not armstrong number");
}
Output
Enter the number : 1000
not armstrong numberC Program To Check Armstrong Number Using Do While Loop
Program
//C Program To Check Armstrong Number Using do While Loop
#include<stdio.h>
void main()
{
//variable declaration
int n,r,sum=0,t;
//input number
printf("Enter the number : ");
scanf("%d",&n);
t=n;
do
{
r=n%10;
sum=sum+(r*r*r);
n=n/10;
}while(n>0);
if(t==sum)
printf("armstrong number ");
else
printf("not armstrong number");
}
Output
Enter the number : 153
armstrong numberC Program To Check Armstrong Number Using Function
Program
//C Program To Check Armstrong Number Using Function
#include<stdio.h>
void arm(int);
int main()
{
int n;
printf("Enter the number : ");
scanf("%d",&n);
arm(n);
return 0;
}
void arm(int n)
{
int r,sum=0,t;
t=n;
while(n>0)
{
r=n%10;
sum=sum+(r*r*r);
n=n/10;
}
if(t==sum)
printf("armstrong number ");
else
printf("not armstrong number");
}
Output
Enter the number : 370
armstrong numberC Program To Check Armstrong Number Using Recursion
Program
//C Program To Check Armstrong Number Using Recursion
#include<stdio.h>
#include<math.h>
int check_ArmstrongNumber(int num)
{
if(num>0)
return (pow((num%10),3) + check_ArmstrongNumber(num/10));
}
int main()
{
int num, sum;
printf("Enter a number: ");
scanf("%d",&num);
sum = check_ArmstrongNumber(num);
if(sum==num)
printf("It is an Armstrong Number");
else
printf("It is not an Armstrong Number");
}
Output
Enter the number : 407
It is an Armstrong NumberRead More
- Download C Language Notes Pdf
- C Language Tutorial For Beginners
- C Programming Examples With Output
- 250+ C Programs for Practice PDF Free Download
Conclusion
So friends, in this article, we have written an Armstrong number program in C.
- C Program To Find Armstrong Number Between 1 to 1000 (Using For Loop)
- C Program To Check Armstrong Number Using While Loop
- C Program To Check Armstrong Number Using Do While Loop
- C Program To Check Armstrong Number Using Function
- C Program To Check Armstrong Number Using Recursion
If you have difficulty to understand any program or have any doubts or questions, then tell me in the comment below.
