Thread: Comparing values

How would I do this :

Code:

#include <stdio.h>

    FILE * output = stdout;
    FILE * input = stdin;

int main(void)
{
float exposure;
fscanf(output,"%f",exposure);
If ((exposure==0.000025)||(0<exposure<0.000025))
{
fprintf(output,"Nearest Exposure values is 1/4000");
return 0;
}
else if ((exposure==0.0005)||(0.000025<exposure<0.0005))
{
fprintf(output,"Nearest Exposure values is 1/2000");
return 0;
}
else if ((exposure==0.001)||(0.0005<exposure<0.001))
{
fprintf(output,"Nearest Exposure values is 1/1000");
return 0;
}
else
{
printf("etc...");
return 0;
}
}