void RecreatorImpl::prependKeyword(CommandCode command_code)
{
std::string string = command_code.getKeyword();
swapTop(string);
append(' ');
append(string);
}
int main(int argc, char const *argv[])
{
puts("(calculator v0.2)");
puts("enter the expression:");
int type;
double op2;
char s[MAXOP];
extern int sp;
while ((type = getop(s)) != EOF)
{
if (sp >= 2) {
switch (type) {
case '%' :
op2 = pop();
if(op2) {
push(fmod(pop(), op2)) ;
}else
printf("\nError: Division by zero!");
continue;
case '+' :
push (pop() + pop ());
continue;
case '-' :
op2 = pop();
push (pop() - op2);
continue;
case '*':
push (pop() * pop());
continue;
case '/':
op2 = pop ();
if (op2 != 0.0)
{
push (pop() / op2);
}
else {
printf("error : zero divisor\n");
}
continue;
case '~':
swapTop();
continue;
}
}else if (sp == 1){
if (type == '-'){
push(-pop());
continue;
}else if (type == '+' ||
type == '*' ||
type == '/'){
printf("error : no enough number to calculate\n");
continue;
}
}
switch (type){
case NUMBER :
push (atof (s));
continue;
case IDENTIFIER :
exFunction(s);
continue;
case '@':
printAll();
continue;
case '\n':
printTop();
continue;
case '$':
flush();
fprintf(stderr, "unknown operand and the stack is flushed, try again \n");
continue;
case '_':
printf("%lf", copyTop());
continue;
default:
fprintf(stderr, "no such command: %c\n", type);
}
}
return 0;
}
