Answer / sulthan

#include<stdio.h>
void main()
{
int a,i,n=0;
printf("\nEnter the Number");
scanf("%d",&a);
for(i=1;i<=a;i++)
if(a%i==0)
n++;
if(n=2)
printf("Prime")
else
printf("NOT Prime");
}

What do you understand by friend-functions? How are they used?

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What is ctrl c called?

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write the program for prime numbers?

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what is call by value and call by reference

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