```
#include<stdio.h>
#include<math.h>
int main()
{
    char sign1='-',sign2='-' ;

    double x=-1,y=4,radius=9;

        if(x<0.0)
        {
            sign1='+';
            x=x*-1;
        }
        if(y<0.0) {
            sign2='+';
            y=y*-1;
        }

        printf("(x %c %.3lf)^2 + (y %c %.3lf)^2=%.3lf^2\n",x,sign1,y,sign2,radius);//here doesn't print the values of sign1 and sign2

        printf("%c %c\n",sign1,sign2);//here prints properly;

    return 0;
}

```

In my code, the first `printf` function doesn't work properly. It should print `(x + 1.000)^2 + (y - 4.000)^2 = 9.000^2` but the output I get is

```
(x   0.000)^2 + (y   0.000)^2 = 9.000^2

```

Why?