C P.L., using goto statement for temperature conversion. Need to learn :) : #include <stdio.h>

int main() {

    char choice;
    float x,y;

    start:
    printf("[c] Converts Celsius -> Fahrenheit\n[f] Converts Fahrenheit -> Celsius\n\n\n");
    printf("Enter Choice: ");
    scanf("%c",&choice);
    if (choice!='c' || choice!='f' || choice!='x') {
            printf("Wrong Choice: Try Again!");
            goto start;

        } if (choice!=x)
          printf("Input Value: ");
          scanf("%f",&x);
                if (choice =='c')
                    y = 1.8 * x + 32
                else
                    y = (x-32) * (5/9)
          printf("Result: %.2f",y);
          exit:

    return 0;
}




My instructor posted this but when I tried it, it have errors, need help to fix it :) Any help will do :)
