题解 | #计算三角形的周长和面积#

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