C Program To Convert Temperature From Fahrenheit To Celsius

#include <stdio.h>

int main()
{
       int chh;
       float aa,bc,c,f;
       printf("\n");
       printf("1. Press 1 for Fahrenheit to Celsius conversion \n");
       printf("2. Press 2 for Celsius to Fahrenheit conversion\n");
    
       scanf("%d", &chh);
       switch(chh)
       {
              case 1:
                      printf("\n Enter the temperature in Fahrenheit : ");
                      scanf("%f",&aa);
                      c = 5 * (aa-32) / 9;
                      printf("\n \n  Temperature in Celsius is :%f ", c);
                      break;
              case 2:
                      printf("\n Enter the temperature in Celsius : ");
                      scanf("%f",&bc);
                      f = ( ( 9 * bc ) / 5 ) + 32;
                      printf("\n \n Temperature in Fahrenheit is: %f", f);
                      break;
            default:
                      printf("\n\n This is Wrong Choice.....Try Again later!!!\n");
    }
    
    return(0);
}