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[主观题]
执行下面程序时,若输入1、-5、6,则输出结果为()。#include<stdio.h>#include<math.h>#definedisc(a,
执行下面程序时,若输入1、-5、6,则输出结果为()。 # include <stdio.h> # include <math.h> # define disc(a,b,c) b*b-4*a*c main() { float x1,x2; int a,b,c; scanf("%d,%d,%d",&a,&b,&c); x1=(-b+sqrt(disc(a,b,c)))/(2*a); x2=(-b-sqrt(disc(a,b,c)))/(2*a); printf("%5.1f.%5.1f",x1,x2); }
A.3,2
B.3.0,2.0
C.-3,-2
D.程序出错
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