Fahrenheit to centigrade & Centigrade to Fahrenheit

#include<stdio.h>

#include<conio.h>

main()

{

  float fer,cent;

  int a;

  printf("To convert centigrade to fahtenheit type '1'\nTo convert fahtenheit  to centigrade  type '2': ");

  scanf("%d",&a);

  clrscr();

  if(a==1)

  {

                printf("Enter temperature in centigrade:");

                scanf("%f", &cent);

                fer=(1.8*cent)+32;

                printf("\n Fehrenheit equivalent is : %.2f", fer);

  }

                if(a==2)

  {

                printf("Enter temperature in Fehrenheit:");

                scanf("%f", &fer);

                cent=(fer-32)*5/9;

                printf("\n Centigrade equivalent is : %.2f", cent);

  }

}