Currency Converter - USD & BDT [C Programming]

#include <stdio.h>
void main()
{
    int i;
    float usd, bdt;
    printf("Press 1 to convert USD to BDT\nPress 2 to convert BDT to USD\n");
    printf("Enter your choice: ");
    scanf("%d", &i);
    switch(i)
    {
        case 1:
            printf("Enter amount in USD: ");
            scanf("%f", &usd);
            bdt = usd * 80;
            printf("1 USD = 80 BDT\n");
            printf("%0.3f USD = %0.3f BDT", usd, bdt);
            break;
        case 2:
            printf("Enter amount in BDT: ");
            scanf("%f", &bdt);
            usd = bdt * 0.0125;
            printf("1 BDT = 0.0125 USD\n");
            printf("%0.3f BDT = %0.3f USD", bdt, usd);
            break;
        default:
            printf("Wrong Choice!");
    }
}