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#include <stdio.h>
#include <math.h>
void main()
{
float a,b,c,disc,x1,x2,p,q;
scanf("a=%f,b=%f,c=%f",&a,&b,&c);
disc=b*b-4*a*c;
p=-b/(2*a);
q=sqrt(disc)/(2*a);
x1=p+q;
x2=p-q;
printf("x1=%5.2f\nx2=%5.2f\n",x1,x2);
}
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scanf("%f,%f,%f",&a,&b,&c);

C/C++ code:

#include <stdio.h>
#include <math.h>
void main()
{
float a,b,c,disc,x1,x2,p,q;
scanf("%f",&a);
scanf("%f",&a);
scanf("%f",&a);
disc=b*b-4*a*c;
p=-b/(2*a);
q=sqrt(disc)/(2*a);
x1=p+q;
x2=p-q;
printf("x1=%5.2lf\nx2=%5.2lf\n",x1,x2); //float*float=double£¬ËùÒÔÊä³öÓÃ%5.2lf
}


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#include"stdio.h"
#include"stdlib.h"
void ContrTwo(char i)
{
char str1[8];
itoa(i,str1,2);
printf("%s",str1);
}
unsigned char leftRot(char str,int i);
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