题解 | #计算三角形的周长和面积#

#include <stdio.h>
#include<math.h>
int main() {
    int a, b, c = 0;
    scanf("%d %d %d", &a, &b, &c);
    double circumference = a + b + c;
    float d = circumference / 2.0;
    float area = sqrt(d * (d - a) * (d - b) * (d - c));
    printf("circumference=%.2f area=%.2f", circumference,area);
    return 0;
}