s2_023.c

一般的C语言程序

#define PI 3.1415926
#define A1"宏定义应用举例＼n"
#define A2"请输入半径："
main()
{ 
	float l,s,r,q,v;
	printf(A1);
	printf("%s",A2);
	scanf("%f",&r)；
	l=2.0*PI*r;
	s=PI*r*r;
	q=4*s;
	v=4.0/3*PI*r*r*r;
	printf("l=%12.4f\\ns=%12.4f\\nq=%12.4f\\nv=%12.4f\\n",l,s,q,v);
}