To check whether the person is in teen age or not

Program:

#include<stdio.h>
#include<conio.h>
void main()
{
    int age;
    clrscr();
    printf("Enter the age : ");
    scanf("%d", &age);
    if(age >= 13 && age <= 19)
    printf("\nThe person is in teenage.");
    else
    printf("\nThe person is not in teenage.");
    getch();
}

Output:

Case: 1

Enter the age : 16
The person is in teenage.

Case: 2

Enter the age : 21
The person is not in teenage.