I just created a simple calculator and I am using 360 total security as my Antivirus.
After the run and build this code below it delete my EXE, do I need to add some code to prevent anti-virus from detected my Application or this is normal?

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

int radius, area;

int main(void)
    printf("Enter radius (i.e. 10): ");
    scanf("%d", &radius);
    area = (int) (3.14159 * radius * radius);
    printf( "\n\nArea = %d\n", area);
    return 0;