cou<<"逆转数为:"<n<end 6.上机实验题五(选做):编程序从键盘输入三角形的三边长,输出三角形的周长和面积 #include <iostream.h> #include <math.h> float a, b, c,s,area cout <<"please input sides of one triangle: In cin >>a >>b>>c: sqr(s°(s-a)°(s-b)°(s-C); out<<"周长为"<<2*s<end cout<<"面积为"<<area<<endlcout<<"逆转数为:"<<n<<endl; } 6.上机实验题五( 选做): 编程序从键盘输入三角形的三边长，输出三角形的周长和面积 #include <iostream.h> #include <math.h> void main() { float a,b,c,s,area; cout <<"please input 3 sides of one triangle:\n"; cin >>a >>b >>c; s=(a+b+c)/2; area=sqrt(s*(s-a)*(s-b)*(s-c)); cout <<"周长为"<<2*s<<endl; cout <<"面积为 " << area <<endl; }