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Write a program to identify whether the given number is a perfect number or not using a function. 28 is a perfect number.
#include<stdio.h> int perfect(int ); int main() { int n,s; printf("enter the number:"); scanf("%d",&n); s=perfect(n); if(s==n) { printf("%d is perfect",n); } else printf("%d not perfect"); } int perfect(int n) { int i,sum=0; for(i=1;i<=n/2;i++) { if(n%i==0) { sum=sum+i; } } return sum; }
Why Sky appears blue?
The sky appears “blue” during the day is that, as sunlight passes through the atmosphere, the shorter wavelengths (i.e. blue) of the visible spectrum are scattered more than the other (longer) visible wavelengths. Credit: Bhuwan Ranjit
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