C语言的一些基础题TC编程1.求半径为5的球的体积2.求已知三个实数的积3.已知三角形ABC边长为6.1, 5.2, 8

1.#include
void main ()
{ float r,pi=3.1415,v;
scanf("%f",&r);
v=3.0/4*pi*r*r*r;
printf("%f",v);
}
2..#include
void main ()
{ float a,b,c;
scanf("%f %f %f",&a,&b,&c);
printf("%f",a*b*c);
}
3.#include
#include
#include
void main()
{
float a,b,c,sh,s;
scanf("%f %f %f",&a,&b,&c);
sh=(a+b+c)/2;
s=sqrt(sh*(sh-a)*(sh-b)*(sh-c));
printf("%f\n",s);
}
输入相应数据就行