题解 | #计算三角形的周长和面积#
计算三角形的周长和面积
https://www.nowcoder.com/practice/109a44d649a142d483314e8a57e2c710
#include <stdio.h>
#include <math.h>
int main() {
float a, b, c;
scanf("%f %f %f", &a, &b, &c);
float cir = a + b + c;
float p = cir / 2.0;
float area = sqrt(p*(p-a)*(p-b)*(p-c));
printf("circumference=%.2f area=%.2f\n", cir, area);
return 0;
}
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