ex10lista05

/*
It is a simple calculator able to operate over just two numbers.
*/

#include <stdio.h>

int main(){
    float a, b;
    char op;

    do{
        printf("\nEnter a, b: ");
        scanf("%f %f", &a, &b);

        printf("\nChoose among the operation (+, -, *, /,) or hit E to exit: ");
        scanf("%c", &op);
        op = getchar();

        if(op == '+')
            printf("\nResult = %.2f\n", a + b);
            else if(op == '-')
                printf("\nResult = %.2f\n", a - b);
                else if(op == '*')
                    printf("\nResult = %.2f\n", a * b);
                    else if(op == '/')
                        printf("\nResult = %.2f\n", a / b);
                        else if(op == 'E')
                            printf("\nEnd!\n");
                            else
                                printf("\nInvalid!\n");
    } while(op != 'E');
}