Angles of a triangle and check whether the triangle is valid or not  with C language

#include <stdio.h>

int main()
{
    int angle1, angle2, angle3, sum;

    printf("Enter three angles of triangle: \n");
    scanf("%d%d%d", &angle1, &angle2, &angle3);

    sum = angle1 + angle2 + angle3;
    if (sum == 180 && angle1 > 0 && angle2 > 0 && angle3 > 0)
    {
        printf("Triangle is valid.");
    }
    else
    {
        printf("Triangle is not valid.");
    }

    return 0;
}

Output:-


Enter three angles of triangle : 80 70 30

Triangle is valid.