C Program To Find Prime Number

 PRIME OR NOT

Code :

#include<stdio.h>

int main()
{
    int n, flag = 0;

    printf("Enter an positive integer: ");
    scanf("%d", &n);

    if(n == 1 || n == 0)
    {
        flag = 1;
    }
   
    for(int i=2; i<= n/2; ++i)
    {
        if(n%i == 0)
        {
            flag = 1;
        }
    }

    if(flag == 1)
    {
        printf("\n\tNon Prime Number");
    }

    else
    {
        printf("\n\tA Prime NUmber");
    }
    return 0;
}

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