2-5.c

在Linux环境下用c编写的输入输出实例源码

#include <stdio.h>

#define PI 3.1415926

int main( )
{
	float r = 2.56;
	float l, s;

	l = 2*PI*r;
	s = PI*r*r;
	printf("l=%f\n", l);
	printf("s=%f\n", s);
}