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C Exercises: Find narcissistic decimal numbers within a specific range

C Numbers: Exercise-34 with Solution

Write a program in C to find narcissistic decimal numbers within a specific range.

Test Data
Input the lower limit: 100
Input a upper limit: 1000

Sample Solution:

C Code:

# include <stdio.h>
# include <stdlib.h>
# include <stdbool.h>
# include <math.h>


int main() 
{
    int nl,nu;
	printf("\n\n Find the narcissistic decimal numbers between a specific range: \n");
	printf(" --------------------------------------------------------------------\n");
 	printf(" Input the lower limit: ");
    scanf("%d",&nl);	
	printf(" Input a upper limit: ");
    scanf("%d",&nu);		
	printf(" The narcissistic decimal numbers between %d and %d are: \n",nl,nu);
    int i,ctr,j,orn,n,m,sum;
    for(orn=nl;orn<=nu;orn++)
    {
    ctr=0;
    sum=0;
    n=orn;
       while(n>0) 
       {
          n=n/10;
           ctr++;
       }
        n=orn;
       while(n>0) 
       {
          m=n % 10;
          sum=sum+pow(m,ctr);
          n=n/10;
       }
       if(sum==orn)
       {
           printf(" %d ",orn);
    }
}
	printf("\n");
}

Sample Output:

 Input the lower limit: 100                                                                                   
 Input a upper limit: 1000                                                                                    
 The narcissistic decimal numbers between 100 and 1000 are:                                                   
 153  370  371  407

Pictorial Presentation:

C programming: Find narcissistic decimal numbers within a specific range.

Flowchart:

Flowchart: Find narcissistic decimal numbers within a specific range.

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C Programming: Tips of the Day

Static variable inside of a function in C

The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().

The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.

The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().

Ref : https://bit.ly/3fOq7XP