Ŀ

գҪıйص䡣
һ repeat (0<repeat<10) repeat 㣺
ε3 a, b, cܹһΣ area ܳ perimeter(2λС)"These sides do not correspond to a valid triangle"
һУ֮ʹڵߡ㹫ʽarea = (s(s-a)(s-b)(s-c))^0.5 s = (a+b+c)/2
ʹ䣺
printf("area = %.2f, perimeter = %.2f\n",area, perimeter);
printf("These sides do not correspond to a valid triangle\n");
 
ʾ˵

2       (repeat=2) 
5 5 3	(a=5,b=5,c=3)
1 4 1	(a=1,b=4,c=1)

area = 7.15, perimeter = 13.00
These sides do not correspond to a valid triangle



#include <stdio.h>
#include <math.h>
int main(void)
{
    int a, b, c;
    int repeat, ri;
    double area, perimeter, s;

    scanf("%d", &repeat);
    for(ri = 1; ri <= repeat; ri++){
        scanf("%d%d%d", &a, &b, &c);
/*---------*/
    }
}
