Conversion_program

#include<stdio.h>
int main() {

    float unit, result;
    char input;
    float kmsToMiles = 0.621371;
    float inchesToFoot = 0.0833333;
    float cmsToInches = 0.393701;
    float poundToKgs = 0.453592;
    float inchesToMeters = 0.0254;

    while (1 != 0) {
        printf("Please choose an option \n  1.kmsToMiles\n  2.inchesToFoot\n  3.cmsToInches\n  4.poundToKgs\n  q.Quit the program\n");
        printf("Enter a  input \n");
        scanf("%c", &input);
        switch (input) {
            case '1':
                printf("enter the unit to be converted \n");
                scanf("%f", &unit);
                result = unit * kmsToMiles;
                printf("%f kms is converted to %f miles \n", unit, result);
                break;
            case '2':
                printf("enter the unit to be converted \n");
                scanf("%f", &unit);
                result = unit * inchesToFoot;
                printf("%f is converted to %f  \n", unit, result);
                break;

            case '3':
                printf("enter the unit to be converted \n");
                scanf("%f", &unit);
                result = unit * cmsToInches;
                printf("%f  is converted to %f \n", unit, result);
                break;


            case '4':
                printf("enter the unit to be converted \n");
                scanf("%f", &unit);
                result = unit * poundToKgs;
                printf("%f is converted to %f \n", unit, result);
                break;
            case 'q':
                printf("Quiting the program \n");
                goto end;
                break;
            default:
                printf("In default now \n");
        }

    }
    end:

    return 0;
}