#include <stdio.h>
    int main(void)
    {
    float value1, value2;
    char operator, ch;
    printf("Type in your expression.n");

    scanf_s("%f %c %f", &value1, &operator, &value2);

//This version works...
    /*
    scanf_s("%f", &value1);
    ch = getchar();
    scanf_s("%c", &operator);
    scanf_s("%f", &value2);
    */

    switch (operator)
    {
    case '+':
    printf ("%.2fn", value1 + value2);
    break;
    case '-':
        printf("%.2fn", value1 - value2);
        break;
    case '*':
        printf("%.2fn", value1 * value2);
        break;
    case '/':
        if (value2 == 0)
            printf("Division by zero.n");
        else
            printf("%.2fn", value1 / value2);
        break;
    default:
        printf("Unknown operator.n");
        break;
    }

    system("pause");
    return 0;
    }