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浙大c语言答案
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你可能喜欢用c语言求ax^2+bx+c=0方程的解
用求ax^2+bx+c=0方程的解。
#include &stdio.h&
#include &math.h&
#define m 0.000001
int main()
float a,b,c,x,x2,n,q,p;
scanf (&%f%f%f&,&a,&b,&c);
n=b*b-4*a*c;
if ((a&m)&&(a&-m))
printf(&%f&,x);
else if ((n&m)&&(n&-m))
x=(-b)/(2*a);
printf(&%f&,x);
else if (n&0)
x=((-b)+sqrt(n))/(2*a);
x2=((-b)-sqrt(n))/(2*a);
printf(&%f\n%f&,x,x2);
q=(-b)/(2*a);
p=sqrt(-n)/(2*a);
printf(&%f+%fi\n&,q,p);
printf(&%f-%fi\n&,q,p);
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