用c语言编程序判断一个实数a是否等于0。。哪位帮帮忙。谢谢

Question

如题所述

Answer 1

#include<stdio.h>
#define EPISTION 0.000001 /*精度*/
void main()
{double a;
printf("Enter a float number:\n");
scanf("%lf",&a);
if((a >= -EPISTION)&&(a <= EPISTION)) printf("a==0\n");
else printf("a!=0\n");
}

Answer 2

include <stdio.h>
int main()
{
flloat a;

scanf("%f",&a);

if(a==0)

printf("a等于0");

else

printf("a不等于0");

return 0;

}追问

谢谢哒~~~

Answer 3

if(a == 0)就可以了啊

Answer 4

const float A=0.00001 if(a>=-A&&a<=A)

Answer 5

fabs(a)<=1e-6;