309

# include<stdio.h>
int main(void)
{
    double value1,value2;
    char op;
    printf("Type in an expression:");
    scanf("%lf%c%lf",&value1,&op,&value2);
    switch(op){
    case'+':
        printf("=%.2f\n",value1 + value2);
        break;
    case'-':
        printf("=%.2f\n",value1 - value2);
    case'*':
        printf("=%.2f\n",value1 * value2);
    case'/':
        printf("=%.2f\n",value1 /value2);
        break;
    default:
printf:
        printf("Unknoen operator\n");
        break;
    }
    return 0;
}