题解 | #计算三角形的周长和面积#

#define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <math.h> int main() { float C, S; int a, b, c;//三角形的三边 float p; scanf("%d %d %d",&a,&b,&c); C = a + b + c; p = (a + b + c)(a + b - c)(a + c - b)*(b + c - a);//海伦公式 S = sqrt(p) / 4; printf("circumference=%.2f area=%.2f", C, S); return 0; }