C Exercises: Check two numbers are Amicable numbers or not
C Numbers: Exercise-25 with Solution
Write a program in C to check two numbers are Amicable numbers or not.
Test DataInput the 1st number : 1184
Input the 2nd number : 1210
Sample Solution:
C Code:
# include <stdio.h>
# include <stdlib.h>
# include <stdbool.h>
# include <math.h>
int ProDivSum(int n)
{
int sum = 1;
for (int i=2; i<=sqrt(n); i++)
{
if (n%i == 0)
{
sum += i;
if (n/i != i)
sum += n/i;
}
}
return sum;
}
bool chkAmicable(int a,int b)
{
return(ProDivSum(a) == b && ProDivSum(b) == a);
}
int main()
{
int n, i, j, ctr,nm1,nm2;
printf("\n\n Check whether two numbers are Amicable pairs or not: \n");
printf("\n Sample: (220, 284), (1184, 1210), (2620, 2924).. \n");
printf(" --------------------------------------------------------\n");
printf(" Input the 1st number : ");
scanf("%d",&nm1);
printf(" Input the 2nd number : ");
scanf("%d",&nm2);
if( chkAmicable(nm1,nm2))
printf(" The given numbers are an Amicable pair.\n");
else
printf(" The given numbers are not an Amicable pair.\n");
return 0;
}
Sample Output:
Input the 1st number : 1184 Input the 2nd number : 1210 The given numbers are an Amicable pair.
Pictorial Presentation:
Flowchart:

C Programming Code Editor:
Contribute your code and comments through Disqus.
Previous: Write a program in C to find Duck Numbers between 1 to 500.
Next: Write a program in C to count the amicable pairs in an array.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
C Programming: Tips of the Day
How to increment a pointer address and pointer's value?
First, the ++ operator takes precedence over the * operator, and the () operators take precedence over everything else.
Second, the ++number operator is the same as the number++ operator if you're not assigning them to anything. The difference is number++ returns number and then increments number, and ++number increments first and then returns it.
Third, by increasing the value of a pointer, you're incrementing it by the sizeof its contents, that is you're incrementing it as if you were iterating in an array.
Ref : https://bit.ly/3vMewPt
- Exercises: Weekly Top 12 Most Popular Topics
- Pandas DataFrame: Exercises, Practice, Solution
- Conversion Tools
- JavaScript: HTML Form Validation
- SQL Exercises, Practice, Solution - SUBQUERIES
- C Programming Exercises, Practice, Solution : For Loop
- Python Exercises, Practice, Solution
- Python Data Type: List - Exercises, Practice, Solution
- C++ Basic: Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - exercises on Employee Database
- SQL Exercises, Practice, Solution - exercises on Movie Database
- SQL Exercises, Practice, Solution - exercises on Soccer Database
- C Programming Exercises, Practice, Solution : Recursion